mdm9640: Append "rootwait" to kernel commandline in case of emmc
mdm9640: Append "rootwait" to kernel commandline in case of emmc

rootwait will help kernel to wait before the root device is ready
to get mounted in emmc boot.

Change-Id: Ibe11f0990fccbf605b96c381e43d7e82ed5cc3b4

CanarySolutions/little-kernel,efidroid/lk,CanarySolutions/little-kernel,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,CanarySolutions/little-kernel,Foxda-Tech/polaris-bootable-bootloader-lk,efidroid/lk,Foxda-Tech/polaris-bootable-bootloader-lk,efidroid/lk,efidroid/lk,CanarySolutions/little-kernel,efidroid/lk,Foxda-Tech/polaris-bootable-bootloader-lk,CanarySolutions/little-kernel