GFX-Display: support send command align to byte.

GFX-Display: support send command align to byte.

BZ: 28302

1.before this patch, the DCS parameters max to 8
which not meet some DCS command necessary.

2.another, before this patch, command send align to
DWORD, which has potential overwrite panel intrel
register problem.

here ,update it more dynamic

Change-Id: I0d6544e7b8127f03d8a1be25dad41c0834ece77c
Signed-off-by: Ke Ai <ke.ai@intel.com>
Reviewed-on: http://android.intel.com:8080/40438
Reviewed-by: Xu, Randy <randy.xu@intel.com>
Tested-by: Xu, Randy <randy.xu@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>