ANDROID: 16K: Introduce __MAX_PAGE_SIZE macros

For some cases, such as the vDSO layout, the page alignment needs
to be know at build time.

Introduce __MAX_PAGE_SIZE and friends for use in such scenarios.

Bug: 365566776
Bug: 365177458
Bug: 356729201
Change-Id: I216568384efb147c868278318718703099e12e1c
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
(cherry picked from commit de3d1dbe)