ARM: davinci: Use standard logging styles

Convert printks to pr_<level> and pr_warning to pr_warn.

Other miscellanea:

o Coalesce formats
o Realign arguments
o Use %s, __func__ instead of embedded function names
o Add pr_fmt to mityomapl138 and mux

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/clock.c

@@ -564,7 +564,7 @@ int davinci_set_refclk_rate(unsigned long rate)
 
 	refclk = clk_get(NULL, "ref");
 	if (IS_ERR(refclk)) {
-		pr_err("%s: failed to get reference clock.\n", __func__);
+		pr_err("%s: failed to get reference clock\n", __func__);
 		return PTR_ERR(refclk);
 	}