Re-enable Init.D and cleanup the pac_common.mk

PS2: Fix some typos.

Change-Id: I916c65e0e54d89191b7c4cc9538d8b6899e6d135
Signed-off-by: Lokesh Chamane <lokesh.c703@gmail.com>
Merge "Re-enable Init.D and cleanup the pac_common.mk" into pac-4.4