clk: imx6q: add mmdc0 ipg clock

i.MX6Q has MMDC0 ipg clock in CCM CCGR, add it into
clock tree for clock management.

Signed-off-by: Anson Huang <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
2 files changed