linux-wandboard

MGS-2485 [#imx-309] fix gpu base address for new mmu version

The new gpu mmu has no base address feature and need set zero,
But hardware mmu version is not initialized before set baseaddress,

Hence kernel will get the wrong base address and pass to user driver,
This fix will add mmu version initialization before version check.

Date: Feb 15, 2017
Signed-off-by: Xianzhong <xianzhong.li@nxp.com>