doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/arch/arm/mach-exynos/include/mach/clk.h b/arch/arm/mach-exynos/include/mach/clk.h
index 298535d..cf8db21 100644
--- a/arch/arm/mach-exynos/include/mach/clk.h
+++ b/arch/arm/mach-exynos/include/mach/clk.h
@@ -55,7 +55,7 @@
  *
  * @param peripheral	Peripheral id
  *
- * @return frequency of the peripheral clk
+ * Return: frequency of the peripheral clk
  */
 unsigned long clock_get_periph_rate(int peripheral);