ANDROID: fix CRC error in struct zone and struct ttm_pool

In commit ded1ffea ("mm, treewide: introduce NR_PAGE_ORDERS"), the
free_area field is changed from:
	struct free_area	free_area[NR_PAGE_ORDERS];
to:
	struct free_area	free_area[MAX_ORDER + 1];

which is identical, but it causes a CRC change (there is a "()" inserted
where there previously wasn't.)

Same thing for struct ttm_pool.

Fix this up for now by just reverting back to the original value to
preserve the CRC.

This whole commit can be reverted at the next ABI break.

Fixes: ded1ffea ("mm, treewide: introduce NR_PAGE_ORDERS")
Bug: 161946584
Change-Id: Ib4be8d9dbdafd00acd00263f898b69201028add2
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>