arm64: defconfig: enable Qualcomm IPA and RMNet modules

Enable building the Qualcomm IPA driver as a kernel module.  To be
useful, the IPA driver also requires RMNet, so enable building that
as a module as well.
Signed-off-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20200518215455.10095-1-elder@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/configs/defconfig

@@ -305,6 +305,7 @@ CONFIG_MLX4_EN=m
 CONFIG_MLX5_CORE=m
 CONFIG_MLX5_CORE_EN=y
 CONFIG_QCOM_EMAC=m
+CONFIG_RMNET=m
 CONFIG_RAVB=y
 CONFIG_SMC91X=y
 CONFIG_SMSC911X=y
@@ -312,6 +313,7 @@ CONFIG_SNI_AVE=y
 CONFIG_SNI_NETSEC=y
 CONFIG_STMMAC_ETH=m
 CONFIG_TI_K3_AM65_CPSW_NUSS=y
+CONFIG_QCOM_IPA=m
 CONFIG_MDIO_BUS_MUX_MMIOREG=y
 CONFIG_MDIO_BUS_MUX_MULTIPLEXER=y
 CONFIG_AQUANTIA_PHY=y