msm: board-7630: Remove has_outer_cache flag(adapted for spade)

7630 doesn't have outer cache. So, disable outer_cache_ops
for ION heaps.

Change-Id: I185a0a0e752d12a1a680ef81c12ce2cd964010a1
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
(cherry picked from commit 395ed6c)

Signed-off-by: Sudhir Sharma <sudsha@codeaurora.org>