Define CCM_CCGR1_GPT, for compatibility with TeensyThreads

teensy4/imxrt.h

 #define CCM_CCGR1_CSU(n)			((uint32_t)(((n) & 0x03) << 28))
 #define CCM_CCGR1_GPIO1(n)			((uint32_t)(((n) & 0x03) << 26))
 #define CCM_CCGR1_LPUART4(n)			((uint32_t)(((n) & 0x03) << 24))
-#define CCM_CCGR1_GPT1_SERIAL(n)			((uint32_t)(((n) & 0x03) << 22))
+#define CCM_CCGR1_GPT1_SERIAL(n)		((uint32_t)(((n) & 0x03) << 22))
 #define CCM_CCGR1_GPT1_BUS(n)			((uint32_t)(((n) & 0x03) << 20))
+#define CCM_CCGR1_GPT(n)			((uint32_t)(((n) & 0x03) << 20))
 #define CCM_CCGR1_ADC1(n)			((uint32_t)(((n) & 0x03) << 16))
 #define CCM_CCGR1_AOI2(n)			((uint32_t)(((n) & 0x03) << 14))
 #define CCM_CCGR1_PIT(n)			((uint32_t)(((n) & 0x03) << 12))
 	} while (location < end_addr);
 	asm("dsb");
 	asm("isb");
-}
+}