clk: sunxi: fix thinko in comment

This should read MOD0 and not MMC; MMC is just one example of a MOD0
clock.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index aaec9d7..bd7dc73 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -330,7 +330,7 @@
 
 /**
  * sun4i_get_mod0_factors() - calculates m, n factors for MOD0-style clocks
- * MMC rate is calculated as follows
+ * MOD0 rate is calculated as follows
  * rate = (parent_rate >> p) / (m + 1);
  */