Add MBUS Master Clock Gating Register for H6 and H616
For H6/H616, the NAND controller needs the MBUS NAND clock along with
CLK_NAND0/1 and CLK_BUS_NAND.
The bit locations are from H6/H616 User Manuals.
Signed-off-by: Richard Genoud <richard.genoud@bootlin.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>