ftdump: use utilfdt to read blob
ftdump: use utilfdt to read blob

Now that we have utilfdt_read(), ftdump should use it too.

Signed-off-by: Simon Glass <c00b0378376498bd9cd974c388df8854c0131d27@chromium.org>
Acked-by: David Gibson <aa743a0aaec8f7d7a1f01442503957f4d7a2d634@gibson.dropbear.id.au>

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