video: AMBA CLCD: Remove unncessary include in amba-clcd.c

The header file asm/sizes.h is unnecessary.
And it can also be compiled under X86 arch after the removal.

Signed-off-by: Wang Hongcheng <annie.wang@amd.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>