arm64: defconfig: Make TEGRA186_GPC_DMA built-in

Make TEGRA186_GPC_DMA driver as built-in since the clients using the
DMA (like I2C_TEGRA etc) are built-in. This would avoid the potential
long delay probe deferral can cause.
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/configs/defconfig

@@ -998,7 +998,7 @@ CONFIG_MV_XOR=y
 CONFIG_MV_XOR_V2=y
 CONFIG_OWL_DMA=y
 CONFIG_PL330_DMA=y
-CONFIG_TEGRA186_GPC_DMA=m
+CONFIG_TEGRA186_GPC_DMA=y
 CONFIG_TEGRA20_APB_DMA=y
 CONFIG_TEGRA210_ADMA=m
 CONFIG_QCOM_BAM_DMA=y