linux-wandboard

MGS-2485 [#imx-309] fix gpu baseAddress for 7ulp

7ulp gc7000NU support new MMU and need set baseAddress as 0 always.
however gckHARDWARE_GetBaseAddress function has wrong programming
and return the invalid baseAddress.
the corrective code use gcvFEATURE_MMU to replace gcvFEATURE_MC20.

Date: Dec 21, 2016
Signed-off-by: Xianzhong <xianzhong.li@nxp.com>
(cherry picked from commit 41625eed49349053f0faae7fd7ad521df8311bed)