mdm9615: Fix bug which turns off hardware gating for usb_hs1_pclk
mdm9615: Fix bug which turns off hardware gating for usb_hs1_pclk

LK was inadvertently overwriting the settings for the clock
control register usb_hs1_pclk when it does a write to enable
the clock.

Changing this behavior to read-modify-write leaves the
SBL settings intact.

DooMLoRD/android_bootable_bootloader_lk,CanarySolutions/little-kernel,idor/dk50-bootable_bootloader_lk,RonGokhale/android_lk_bootloader,M1cha/lktris,t2m-foxfone/kernel_lk,CanarySolutions/little-kernel,Foxda-Tech/polaris-bootable-bootloader-lk,lg-devs/g2-bootloader,beidl/lk_umia,my4ndr0id/android_bootable_bootloader_lk,thornbirdblue/codeaurora_lk,idor/dk50-bootable_bootloader_lk,beidl/lk_umia,oubeichen/lk-v500,RonGokhale/android_lk_bootloader,zhuotong/mi2_lk_NoEmmc,utilite2/lk,efidroid/lk,jbott/lk_gee,mozilla-b2g/fairphone2_kernel_lk,detule/lk-g2-spr,Redmi-dev/android_bootable_lk,Blefish/android_bootable_bootloader_lk,M1cha/lktris,jsr-d9/android_kernel_lk,oubeichen/lk-v500,MiCode/mi2_lk,utilite2/lk,CanarySolutions/little-kernel,chirayudesai/android_bootable_bootloader_lk,Foxda-Tech/argo8-bootable-bootloader-lk,hanjae/lumiab0,mozilla-b2g/fairphone2_kernel_lk,jsr-d9/android_kernel_lk,Foxda-Tech/polaris-bootable-bootloader-lk,chirayudesai/android_bootable_bootloader_lk,lg-devs/g2-bootloader,t2m-foxfone/android_kernel_lk,mozilla-b2g/kernel_lk,M1cha/android_bootable_bootloader_lk,Foxda-Tech/polaris-bootable-bootloader-lk,my4ndr0id/android_bootable_bootloader_lk,pichina/lk,t2m-foxfone/android_kernel_lk,M1cha/lktris,M1cha/lktris,chirayudesai/android_bootable_bootloader_lk,DooMLoRD/android_bootable_bootloader_lk,MiCode/mi2_lk,zhuotong/mi2_lk_NoEmmc,MiCode/mi2_lk,t2m-foxfone/android_kernel_lk,M1cha/android_bootable_bootloader_lk,pichina/lk,mozilla-b2g/kernel_lk,chirayudesai/android_bootable_bootloader_lk,MiCode/mi2_lk,my4ndr0id/android_bootable_bootloader_lk,M1cha/mi2_lk,jbott/lk_gee,Redmi-dev/android_bootable_lk,jsr-d10/android_bootable_bootloader_lk,RonGokhale/android_lk_bootloader,t2m-foxfone/kernel_lk,jbott/lk_gee,Redmi-dev/android_bootable_lk,RonGokhale/android_lk_bootloader,M1cha/android_bootable_bootloader_lk,hanjae/lumiab0,efidroid/lk,pichina/lk,my4ndr0id/android_bootable_bootloader_lk,hanjae/lumiab0,mozilla-b2g/kernel_lk,beidl/lk_umia,M1cha/mi2_lk,jsr-d9/android_kernel_lk,detule/lk-g2-spr,jsr-d9/android_kernel_lk,idor/dk50-bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,DooMLoRD/android_bootable_bootloader_lk,efidroid/lk,thornbirdblue/codeaurora_lk,zhuotong/mi2_lk_NoEmmc,t2m-foxfone/kernel_lk,utilite2/lk,detule/lk-g2-spr,Blefish/android_bootable_bootloader_lk,t2m-foxfone/kernel_lk,RonGokhale/android_lk_bootloader,lg-devs/g2-bootloader,oubeichen/lk-v500,jsr-d9/android_kernel_lk,oubeichen/lk-v500,Blefish/android_bootable_bootloader_lk,mozilla-b2g/kernel_lk,M1cha/android_bootable_bootloader_lk,beidl/lk_umia,CanarySolutions/little-kernel,Blefish/android_bootable_bootloader_lk,jbott/lk_gee,pichina/lk,t2m-foxfone/android_kernel_lk,detule/lk-g2-spr,jsr-d10/android_bootable_bootloader_lk,utilite2/lk,chirayudesai/android_bootable_bootloader_lk,jsr-d10/android_bootable_bootloader_lk,pichina/lk,CanarySolutions/little-kernel,zhuotong/mi2_lk_NoEmmc,efidroid/lk,jsr-d10/android_bootable_bootloader_lk,hanjae/lumiab0,idor/dk50-bootable_bootloader_lk,thornbirdblue/codeaurora_lk,Redmi-dev/android_bootable_lk,Foxda-Tech/polaris-bootable-bootloader-lk,mozilla-b2g/fairphone2_kernel_lk,efidroid/lk,Blefish/android_bootable_bootloader_lk,zhuotong/mi2_lk_NoEmmc,M1cha/android_bootable_bootloader_lk,my4ndr0id/android_bootable_bootloader_lk,idor/dk50-bootable_bootloader_lk,MiCode/mi2_lk,mozilla-b2g/kernel_lk,mozilla-b2g/fairphone2_kernel_lk,Redmi-dev/android_bootable_lk,utilite2/lk,M1cha/mi2_lk,DooMLoRD/android_bootable_bootloader_lk,detule/lk-g2-spr,M1cha/mi2_lk,lg-devs/g2-bootloader,Foxda-Tech/argo8-bootable-bootloader-lk,jsr-d10/android_bootable_bootloader_lk,thornbirdblue/codeaurora_lk,Foxda-Tech/argo8-bootable-bootloader-lk,t2m-foxfone/kernel_lk,Foxda-Tech/polaris-bootable-bootloader-lk,lg-devs/g2-bootloader,M1cha/mi2_lk,hanjae/lumiab0,t2m-foxfone/android_kernel_lk,thornbirdblue/codeaurora_lk,Foxda-Tech/argo8-bootable-bootloader-lk,M1cha/lktris,mozilla-b2g/fairphone2_kernel_lk,beidl/lk_umia,oubeichen/lk-v500,Foxda-Tech/argo8-bootable-bootloader-lk,jbott/lk_gee,DooMLoRD/android_bootable_bootloader_lk