gralloc : apply kernel 3.4 fb screeninfo type

Since fb screeninfo type is changed in kernel 3.4,
fb ioctl is not work correctly without this patch.

Change-Id: I5d673b78bd9a1680daf77256a7d31bc78d75cda7
hwc: Fix reserved field usage

Use the top 16 bits of reserved[3] for HDMI
and the bottom 16 for FPS. A follow up patch
in the MDP driver will get rid of reserved field
usage entirely.

Change-Id: Ic9f7a2f91b46b0dec830ea54784b7775009fbe48
display: use metadata ioctl to get panel frame rate

Get rid of using reserved fields

Change-Id: Ia3ada294427812e8382f744964f475403f6fb73a