blackfin: add module.h to files implicitly expecting to use it.

Its presence was implicit everywhere, but we are aiming to fix that,
so call out the users explicitly.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

arch/blackfin/mach-common/cpufreq.c

@@ -7,6 +7,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/cpufreq.h>

sound/soc/blackfin/bf5xx-sport.c

@@ -33,6 +33,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/gpio.h>
 #include <linux/bug.h>
+#include <linux/module.h>
 #include <asm/portmux.h>
 #include <asm/dma.h>
 #include <asm/blackfin.h>