[drivers][pin]增加两种IO中断模式

components/drivers/include/drivers/pin.h

@@ -52,6 +52,8 @@ struct rt_device_pin
 #define PIN_IRQ_MODE_RISING             0x00
 #define PIN_IRQ_MODE_FALLING            0x01
 #define PIN_IRQ_MODE_RISING_FALLING     0x02
+#define PIN_IRQ_MODE_HIGH_LEVEL         0x03
+#define PIN_IRQ_MODE_LOW_LEVEL          0x04
 
 #define PIN_IRQ_DISABLE                 0x00
 #define PIN_IRQ_ENABLE                  0x01