libfdt: Add fdt16_to_cpu utility function
libfdt: Add fdt16_to_cpu utility function

This utility routine will be used in the variable size cell literal
append code.  It is a straightforward adaptation of the fdt32_to_cpu
function.

Signed-off-by: Anton Staaf <84531b4b964c017023781514a6665b71e84b32bc@chromium.org>
Acked-by: David Gibson <aa743a0aaec8f7d7a1f01442503957f4d7a2d634@gibson.dropbear.id.au>

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