clk: sunxi: mod0: improve function-level documentation

Use the actual function name in the function documentation.

Issue detected using Coccinelle (http://coccinelle.lip6.fr/)
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

drivers/clk/sunxi/clk-mod0.c

@@ -24,7 +24,7 @@
 #include "clk-factors.h"
 
 /**
- * sun4i_get_mod0_factors() - calculates m, n factors for MOD0-style clocks
+ * sun4i_a10_get_mod0_factors() - calculates m, n factors for MOD0-style clocks
  * MOD0 rate is calculated as follows
  * rate = (parent_rate >> p) / (m + 1);
  */