target: Add weak api to check if target is edp
target: Add weak api to check if target is edp

Adding a weak api to target init file to
default edp flag to false.

Change-Id: I009c5043a5f096a6868ef5fa1b0e9f500de708f0

lg-devs/g2-bootloader,mozilla-b2g/fairphone2_kernel_lk,lg-devs/g2-bootloader,lg-devs/g2-bootloader,t2m-foxfone/android_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,idor/dk50-bootable_bootloader_lk,lg-devs/g2-bootloader,mozilla-b2g/fairphone2_kernel_lk,idor/dk50-bootable_bootloader_lk,idor/dk50-bootable_bootloader_lk,lg-devs/g2-bootloader,idor/dk50-bootable_bootloader_lk,mozilla-b2g/fairphone2_kernel_lk,t2m-foxfone/android_kernel_lk,t2m-foxfone/android_kernel_lk,idor/dk50-bootable_bootloader_lk,t2m-foxfone/android_kernel_lk,mozilla-b2g/fairphone2_kernel_lk,t2m-foxfone/android_kernel_lk