Update imxrt.h (for SPI transaction)

teensy4/imxrt.h

@@ -7168,10 +7168,12 @@ typedef struct {
 #define NVIC_ISER1              (*(volatile uint32_t *)0xE000E104)
 #define NVIC_ISER2              (*(volatile uint32_t *)0xE000E108)
 #define NVIC_ISER3              (*(volatile uint32_t *)0xE000E10C)
+#define NVIC_ISER4              (*(volatile uint32_t *)0xE000E110)
 #define NVIC_ICER0              (*(volatile uint32_t *)0xE000E180)
 #define NVIC_ICER1              (*(volatile uint32_t *)0xE000E184)
 #define NVIC_ICER2              (*(volatile uint32_t *)0xE000E188)
 #define NVIC_ICER3              (*(volatile uint32_t *)0xE000E18C)
+#define NVIC_ICER4              (*(volatile uint32_t *)0xE000E190)
 #define NVIC_STIR		(*(volatile uint32_t *)0xE000EF00)
 #define NVIC_ENABLE_IRQ(n)      (*(&NVIC_ISER0 + ((n) >> 5)) = (1 << ((n) & 31)))
 #define NVIC_DISABLE_IRQ(n)     (*(&NVIC_ICER0 + ((n) >> 5)) = (1 << ((n) & 31)))