Correct aslr_test minimum arm value.

Default mmap_rnd_bits value is now equal to the maximum supported (16)
on arm, not the minimum, 8.  Adjust the test criteria to match this.

(cherry-pick of internal commit: 6d7b862b59743b64500b9b079c90cc50d556ecdf)

Bug: 27680571
Change-Id: I2017bf3b77b9513b0c8a797b6fe3dc6aef8ef431
1 file changed