driver: reset: sti: add keyscan for stih415

Add keyscan reset on stih415 reset controller.
Acked-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NGiuseppe Condorelli <giuseppe.condorelli@st.com>
Signed-off-by: NGabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: NMaxime Coquelin <maxime.coquelin@st.com>

drivers/reset/sti/reset-stih415.c

@@ -73,6 +73,7 @@ static const struct syscfg_reset_channel_data stih415_softresets[] = {
 	[STIH415_USB0_SOFTRESET] = STIH415_SRST_REAR(SYSCFG_376, 9),
 	[STIH415_USB1_SOFTRESET] = STIH415_SRST_REAR(SYSCFG_376, 10),
 	[STIH415_USB2_SOFTRESET] = STIH415_SRST_REAR(SYSCFG_376, 11),
+	[STIH415_KEYSCAN_SOFTRESET] = STIH415_SRST_LPM(LPM_SYSCFG_1, 8),
 };
 
 static struct syscfg_reset_controller_data stih415_powerdown_controller = {

include/dt-bindings/reset-controller/stih415-resets.h

@@ -22,5 +22,6 @@
 #define STIH415_USB0_SOFTRESET		3
 #define STIH415_USB1_SOFTRESET		4
 #define STIH415_USB2_SOFTRESET		5
+#define STIH415_KEYSCAN_SOFTRESET	6
 
 #endif /* _DT_BINDINGS_RESET_CONTROLLER_STIH415 */