Added document describing flattened tree format and what properties / nodes the kernel needs.  Written by BenH and Becky Bruce.
Added document describing flattened tree format and what properties / nodes
the kernel needs.  Written by BenH and Becky Bruce.

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