arm64: imx.config: enable fec-uio driver

Enable fec-uio driver for imx booting up support.
CONFIG_FEC_UIO flag added to compile the fec-uio driver.

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>

arch/arm64/configs/imx.config

@@ -52,6 +52,7 @@ CONFIG_BRCMFMAC=n
 CONFIG_STMMAC_ETH=y
 CONFIG_STMMAC_PLATFORM=y
 CONFIG_DWMAC_IMX8=y
+CONFIG_FEC_UIO=y
 
 # cpu-freq related
 CONFIG_CPU_FREQ_GOV_POWERSAVE=y