aries | p1: config: drop s3c_fb's NR_BUFFERS back to 4

The reason this was increased no longer applies,
so conserve RAM by dropping it back to 4.

Signed-off-by: Alistair Strachan <alistair.strachan@imgtec.com>
Signed-off-by: Humberto Borba <humberos@gmail.com>

Change-Id: Ia0c8bfea31601fe8c5f8d117ea34c5bcbe95de40
Merge "aries | p1: config: drop s3c_fb's NR_BUFFERS back to 4" into android-4.4