clk: sprd: Select REGMAP_MMIO to avoid compile errors

Make REGMAP_MMIO selected to avoid undefined reference to regmap symbols.

Fixes: d41f59fd92f2 ("clk: sprd: Add common infrastructure")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
1 file changed