libgralloc: Discontinue allocating FB buffers from carveout.

Don't allocate primary framebuffer from carveout.
Allocate them from IOMMU heap just like the external framebuffer.

Bug: 7626586
Change-Id: I52a8db1a34d19856302b38d2c30c1290d1f2f060
Signed-off-by: Saurabh Shah <saurshah@codeaurora.org>
Signed-off-by: Iliyan Malchev <malchev@google.com>
1 file changed