arm64: Add contiguous page flag shifts and constants

Add the number of pages required to form a contiguous range,
as well as some supporting constants.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Jeremy Linton 2015-10-07 12:00:19 -05:00 • committed by Catalin Marinas
commit 2ff4439bb4