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-tegra/tegra114/clock.c b/arch/arm/mach-tegra/tegra114/clock.c
index 167589d..703a231 100644
--- a/arch/arm/mach-tegra/tegra114/clock.c
+++ b/arch/arm/mach-tegra/tegra114/clock.c
@@ -553,7 +553,7 @@
  * @param source	PLL id of required parent clock
  * @param mux_bits	Set to number of bits in mux register: 2 or 4
  * @param divider_bits Set to number of divider bits (8 or 16)
- * @return mux value (0-4, or -1 if not found)
+ * Return: mux value (0-4, or -1 if not found)
  */
 int get_periph_clock_source(enum periph_id periph_id,
 	enum clock_id parent, int *mux_bits, int *divider_bits)
@@ -623,7 +623,7 @@
  * provided.
  *
  * @param clk_id    Clock ID according to tegra114 device tree binding
- * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
+ * Return: peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
  */
 enum periph_id clk_id_to_periph_id(int clk_id)
 {