VGA resolution). SGX requires 2 swap buffers
with each of the buffers aligned to lcm(line_length, PAGE_SIZE).

Inorder to satisfy this requirement, we have two options,

	- Increase number of FB buffers (LCD_NUM_BUFFERS) to 3. This is not
	  recommended as we end up wasting huge memory in most of the cases.

	- Align FB buffers to lcm(line_length, PAGE_SIZE).This ensures framebuffer
	  size is increased to satisfy SGX requirements keeping alignment intact.

This patch makes sure that FB allocates buffers aligned to above formula.

Signed-off-by: Aditya Nellutla <aditya.n@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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