msm: kgsl: Make the adreno device attributes generic

Non-ft attributes are part of the general adreno attribute structure.
No need for them to all be labeled under ft.

Change-Id: If28151038784f861c735b8ee7e138d0338f8187b
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>