ARM: dts: aspeed: bletchley: Add interrupt support for sled io expander

Enable interrupt support for all sledx_ioexp, so userspace can monitor
gpio from io expander by interrupt.
Signed-off-by: NPotin Lai <potin.lai@quantatw.com>
Reviewed-by: NJoel Stanley <joel@jms.id.au>
Reviewed-by: NPatrick Williams <patrick@stwcx.xyz>
Link: https://lore.kernel.org/r/20220215163151.32252-7-potin.lai@quantatw.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-facebook-bletchley.dts

@@ -6,6 +6,7 @@
 #include <dt-bindings/gpio/aspeed-gpio.h>
 #include <dt-bindings/usb/pd.h>
 #include <dt-bindings/leds/leds-pca955x.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
 	model = "Facebook Bletchley BMC";
@@ -267,6 +268,9 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 
+		interrupt-parent = <&gpio0>;
+		interrupts = <ASPEED_GPIO(M, 0) IRQ_TYPE_LEVEL_LOW>;
+
 		gpio-line-names =
 		"SLED1_MS_DETECT1","SLED1_VBUS_BMC_EN","SLED1_INA230_ALERT","SLED1_P12V_STBY_ALERT",
 		"SLED1_SSD_ALERT","SLED1_MS_DETECT0","SLED1_RST_CCG5","SLED1_FUSB302_INT",
@@ -330,6 +334,9 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 
+		interrupt-parent = <&gpio0>;
+		interrupts = <ASPEED_GPIO(M, 1) IRQ_TYPE_LEVEL_LOW>;
+
 		gpio-line-names =
 		"SLED2_MS_DETECT1","SLED2_VBUS_BMC_EN","SLED2_INA230_ALERT","SLED2_P12V_STBY_ALERT",
 		"SLED2_SSD_ALERT","SLED2_MS_DETECT0","SLED2_RST_CCG5","SLED2_FUSB302_INT",
@@ -397,6 +404,9 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 
+		interrupt-parent = <&gpio0>;
+		interrupts = <ASPEED_GPIO(M, 2) IRQ_TYPE_LEVEL_LOW>;
+
 		gpio-line-names =
 		"SLED3_MS_DETECT1","SLED3_VBUS_BMC_EN","SLED3_INA230_ALERT","SLED3_P12V_STBY_ALERT",
 		"SLED3_SSD_ALERT","SLED3_MS_DETECT0","SLED3_RST_CCG5","SLED3_FUSB302_INT",
@@ -460,6 +470,9 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 
+		interrupt-parent = <&gpio0>;
+		interrupts = <ASPEED_GPIO(M, 3) IRQ_TYPE_LEVEL_LOW>;
+
 		gpio-line-names =
 		"SLED4_MS_DETECT1","SLED4_VBUS_BMC_EN","SLED4_INA230_ALERT","SLED4_P12V_STBY_ALERT",
 		"SLED4_SSD_ALERT","SLED4_MS_DETECT0","SLED4_RST_CCG5","SLED4_FUSB302_INT",
@@ -523,6 +536,9 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 
+		interrupt-parent = <&gpio0>;
+		interrupts = <ASPEED_GPIO(M, 4) IRQ_TYPE_LEVEL_LOW>;
+
 		gpio-line-names =
 		"SLED5_MS_DETECT1","SLED5_VBUS_BMC_EN","SLED5_INA230_ALERT","SLED5_P12V_STBY_ALERT",
 		"SLED5_SSD_ALERT","SLED5_MS_DETECT0","SLED5_RST_CCG5","SLED5_FUSB302_INT",
@@ -586,6 +602,9 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 
+		interrupt-parent = <&gpio0>;
+		interrupts = <ASPEED_GPIO(M, 5) IRQ_TYPE_LEVEL_LOW>;
+
 		gpio-line-names =
 		"SLED6_MS_DETECT1","SLED6_VBUS_BMC_EN","SLED6_INA230_ALERT","SLED6_P12V_STBY_ALERT",
 		"SLED6_SSD_ALERT","SLED6_MS_DETECT0","SLED6_RST_CCG5","SLED6_FUSB302_INT",