Config: enable techpack display driver compilation for lahaina

This change enables display drivers code compilation
for lahaina target and current location of header files
is replacing the header files in usr/include/drm directory
before installing display specific header files. This change
ensures both the drm and msm_drv header files are exported
to user mode clients.

Change-Id: If6fc347598b902e670b7206dbcb82fe0740b3984
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>