ARM64: Increase the number of gpios to 1280

Number of gpios has increased on sdm845 and existing 1024
number is not enough. Increase the number to 1280.

Change-Id: I9ca0255d9ef52f2d9b4140a7c975d47bd6db63a0
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>
Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>