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/clock.c b/arch/arm/mach-exynos/clock.c
index 99bca54..f91f2ee 100644
--- a/arch/arm/mach-exynos/clock.c
+++ b/arch/arm/mach-exynos/clock.c
@@ -1403,7 +1403,7 @@
  * @param target_freq		Desired clock frequency in Hz
  * @param best_fine_scalar	Pointer to store the fine stage divisor
  *
- * @return best_main_scalar	Main scalar for desired frequency or -1 if none
+ * Return: best_main_scalar	Main scalar for desired frequency or -1 if none
  * found
  */
 static int clock_calc_best_scalar(unsigned int main_scaler_bits,