drm/msm/adreno: remove duplicate adreno_hw_init() call

Not sure where it came from, but seem unintentional.  And also not
needed on a420, so let's just drop it.

Change-Id: Ic0dedbaddb70f0268d4182cc206412b6c69fd472
Signed-off-by: Rob Clark <robdclark@gmail.com>
Git-commit: 7977f4426c44da95c5dba91a62f099411e029de8
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>