[aboot] leave icache disabled before starting linux
[aboot] leave icache disabled before starting linux

This is apparently causing issues on some targets.

minglun-tsai/lk,oubeichen/lk-v500,detule/lk-g2-spr,oubeichen/lk-v500,zhuotong/mi2_lk_NoEmmc,pablomarx/lk,Foxda-Tech/polaris-bootable-bootloader-lk,hanjae/lumiab0,jsr-d10/android_bootable_bootloader_lk,MiCode/mi2_lk,DooMLoRD/android_bootable_bootloader_lk,Redmi-dev/android_bootable_lk,RonGokhale/android_lk_bootloader,M1cha/android_bootable_bootloader_lk,nvll/lk,jcsullins/moboot,littlekernel/lk,Redmi-dev/android_bootable_lk,lg-devs/g2-bootloader,beidl/lk_umia,RonGokhale/android_lk_bootloader,oubeichen/lk-v500,pichina/lk,CanarySolutions/little-kernel,sndnvaps/lk,chirayudesai/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,zhuotong/mi2_lk_NoEmmc,Foxda-Tech/argo8-bootable-bootloader-lk,RonGokhale/android_lk_bootloader,detule/lk-g2-spr,hanjae/lumiab0,M1cha/lk,nvll/lk,sndnvaps/lk,M1cha/lktris,hollanderic/lkstuff,skabet/lk,srodrig1/lk,my4ndr0id/android_bootable_bootloader_lk,pablomarx/lk,mozilla-b2g/fairphone2_kernel_lk,srodrig1/lk,M1cha/mi2_lk,Foxda-Tech/polaris-bootable-bootloader-lk,jsr-d9/android_kernel_lk,pablomarx/lk,t2m-foxfone/android_kernel_lk,efidroid/lk,t2m-foxfone/android_kernel_lk,littlekernel/lk,jsr-d9/android_kernel_lk,travisg/lk,ianloic/lk,my4ndr0id/android_bootable_bootloader_lk,xndcn/moboot-for-veer,mozilla-b2g/kernel_lk,xndcn/moboot-for-veer,chirayudesai/android_bootable_bootloader_lk,jsr-d9/android_kernel_lk,t2m-foxfone/kernel_lk,Blefish/android_bootable_bootloader_lk,CanarySolutions/little-kernel,idor/dk50-bootable_bootloader_lk,GCrean/lk,hollanderic/lkstuff,hollanderic/lkstuff,t2m-foxfone/kernel_lk,hanjae/lumiab0,my4ndr0id/android_bootable_bootloader_lk,M1cha/lktris,M1cha/lk,Foxda-Tech/polaris-bootable-bootloader-lk,pablomarx/lk,oubeichen/lk-v500,beidl/lk_umia,MiCode/mi2_lk,my4ndr0id/android_bootable_bootloader_lk,thornbirdblue/codeaurora_lk,beidl/lk_umia,Blefish/android_bootable_bootloader_lk,littlekernel/lk,detule/lk-g2-spr,M1cha/lk,t2m-foxfone/kernel_lk,Redmi-dev/android_bootable_lk,DooMLoRD/android_bootable_bootloader_lk,idor/dk50-bootable_bootloader_lk,Foxda-Tech/argo8-bootable-bootloader-lk,jsr-d10/android_bootable_bootloader_lk,minglun-tsai/lk,Foxda-Tech/argo8-bootable-bootloader-lk,nvll/lk,utilite2/lk,chirayudesai/android_bootable_bootloader_lk,nvll/lk,Blefish/android_bootable_bootloader_lk,littlekernel/lk,idor/dk50-bootable_bootloader_lk,pichina/lk,jcsullins/moboot,grub4android/lk,mozilla-b2g/kernel_lk,xndcn/moboot-for-veer,chirayudesai/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,GCrean/lk,mozilla-b2g/kernel_lk,t2m-foxfone/android_kernel_lk,ErikCorryGoogle/lk,M1cha/lktris,beidl/lk_umia,M1cha/mi2_lk,GCrean/lk,hanjae/lumiab0,M1cha/lk,DooMLoRD/android_bootable_bootloader_lk,chirayudesai/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,M1cha/lk,zhuotong/mi2_lk_NoEmmc,ianloic/lk,Foxda-Tech/polaris-bootable-bootloader-lk,detule/lk-g2-spr,t2m-foxfone/android_kernel_lk,idor/dk50-bootable_bootloader_lk,t2m-foxfone/kernel_lk,grub4android/lk,grub4android/lk,jcsullins/moboot,MiCode/mi2_lk,Blefish/android_bootable_bootloader_lk,skabet/lk,sndnvaps/lk,ErikCorryGoogle/lk,ErikCorryGoogle/lk,pichina/lk,lg-devs/g2-bootloader,my4ndr0id/android_bootable_bootloader_lk,ianloic/lk,mozilla-b2g/fairphone2_kernel_lk,utilite2/lk,mozilla-b2g/kernel_lk,hollanderic/lkstuff,travisg/lk,Foxda-Tech/argo8-bootable-bootloader-lk,efidroid/lk,jbott/lk_gee,M1cha/lktris,nvll/lk,MiCode/mi2_lk,jcsullins/moboot,jbott/lk_gee,RonGokhale/android_lk_bootloader,jbott/lk_gee,M1cha/android_bootable_bootloader_lk,efidroid/lk,Redmi-dev/android_bootable_lk,M1cha/mi2_lk,pablomarx/lk,mozilla-b2g/fairphone2_kernel_lk,thornbirdblue/codeaurora_lk,jbott/lk_gee,utilite2/lk,thornbirdblue/codeaurora_lk,jcsullins/moboot,M1cha/android_bootable_bootloader_lk,ianloic/lk,zhuotong/mi2_lk_NoEmmc,RonGokhale/android_lk_bootloader,M1cha/lktris,t2m-foxfone/android_kernel_lk,jsr-d9/android_kernel_lk,DooMLoRD/android_bootable_bootloader_lk,lg-devs/g2-bootloader,jsr-d10/android_bootable_bootloader_lk,CanarySolutions/little-kernel,srodrig1/lk,srodrig1/lk,mozilla-b2g/fairphone2_kernel_lk,grub4android/lk,CanarySolutions/little-kernel,pichina/lk,CanarySolutions/little-kernel,efidroid/lk,ErikCorryGoogle/lk,travisg/lk,oubeichen/lk-v500,minglun-tsai/lk,M1cha/android_bootable_bootloader_lk,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/mi2_lk,Blefish/android_bootable_bootloader_lk,skabet/lk,efidroid/lk,mozilla-b2g/fairphone2_kernel_lk,utilite2/lk,M1cha/mi2_lk,sndnvaps/lk,jsr-d10/android_bootable_bootloader_lk,xndcn/moboot-for-veer,lg-devs/g2-bootloader,jcsullins/moboot,jbott/lk_gee,skabet/lk,thornbirdblue/codeaurora_lk,jsr-d9/android_kernel_lk,skabet/lk,grub4android/lk,MiCode/mi2_lk,minglun-tsai/lk,zhuotong/mi2_lk_NoEmmc,t2m-foxfone/kernel_lk,xndcn/moboot-for-veer,DooMLoRD/android_bootable_bootloader_lk,Redmi-dev/android_bootable_lk,GCrean/lk,thornbirdblue/codeaurora_lk,srodrig1/lk,utilite2/lk,Foxda-Tech/argo8-bootable-bootloader-lk,travisg/lk,mozilla-b2g/kernel_lk,lg-devs/g2-bootloader,sndnvaps/lk,detule/lk-g2-spr,pichina/lk,idor/dk50-bootable_bootloader_lk,hanjae/lumiab0,GCrean/lk,beidl/lk_umia