mimxrt/fsl_lpuart: Use a wrapper function to handle IRQ Idle support.

Signed-off-by: Andrew Leech <[email protected]>

ports/mimxrt/Makefile

@@ -135,6 +135,7 @@ SRC_HAL_IMX_C += \
 	$(MCUX_SDK_DIR)/drivers/lpi2c/fsl_lpi2c.c \
 	$(MCUX_SDK_DIR)/drivers/lpspi/fsl_lpspi.c \
 	$(MCUX_SDK_DIR)/drivers/lpspi/fsl_lpspi_edma.c \
+	$(MCUX_SDK_DIR)/drivers/lpuart/fsl_lpuart.c \
 	$(MCUX_SDK_DIR)/drivers/pit/fsl_pit.c \
 	$(MCUX_SDK_DIR)/drivers/pwm/fsl_pwm.c \
 	$(MCUX_SDK_DIR)/drivers/sai/fsl_sai.c \
@@ -150,6 +151,8 @@ else
 SRC_HAL_IMX_C += $(MCU_DIR)/xip/fsl_flexspi_nor_boot.c
 endif
 
+LDFLAGS += --wrap=LPUART_TransferHandleIRQ
+
 INC_HAL_IMX += \
 	-I$(TOP)/$(MCU_DIR) \
 	-I$(TOP)/$(MCU_DIR)/drivers \
@@ -235,7 +238,6 @@ SRC_C += \
 	eth.c \
 	fatfs_port.c \
 	flash.c \
-	hal/fsl_lpuart.c \
 	hal/pwm_backport.c \
 	help.c \
 	led.c \
@@ -467,7 +469,8 @@ LDFLAGS += \
 	--cref \
 	--gc-sections \
 	--print-memory-usage \
-	-Map=$@.map
+	-Map=$@.map \
+    --wrap=LPUART_TransferHandleIRQ
 
 # LDDEFINES are used for link time adaptation of linker scripts, utilizing
 #	the C preprocessor. Therefore keep LDDEFINES separated from LDFLAGS!