mimxrt/sdio: Move config guard so headers are only included if used.

Otherwise it's a build error on certain MCU series.

Signed-off-by: Damien George <damien@micropython.org>

ports/mimxrt/sdio.c

@@ -30,11 +30,11 @@
 #include "pin.h"
 #include "pendsv.h"
 
+#if MICROPY_PY_NETWORK_CYW43
+
 #include "fsl_usdhc.h"
 #include "fsl_iomuxc.h"
 
-#if MICROPY_PY_NETWORK_CYW43
-
 #if MICROPY_HW_SDIO_SDMMC == 1
 #define SDMMC                       USDHC1
 #define SDMMC_IRQn                  USDHC1_IRQn