arm64: defconfig: enable imx8m pcie phy driver

This enables the i.MX 8M PCIe PHY driver (CONFIG_PHY_FSL_IMX8M_PCIE)
required for PCIe functionality.
Signed-off-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm64/configs/defconfig

@@ -1121,6 +1121,7 @@ CONFIG_RESET_TI_SCI=y
 CONFIG_PHY_XGENE=y
 CONFIG_PHY_SUN4I_USB=y
 CONFIG_PHY_MIXEL_MIPI_DPHY=m
+CONFIG_PHY_FSL_IMX8M_PCIE=y
 CONFIG_PHY_HI6220_USB=y
 CONFIG_PHY_HISTB_COMBPHY=y
 CONFIG_PHY_HISI_INNO_USB2=y