configs: dragonboard820: updates

Configure GPIO and CLK_STUBS
CLK_STUBS is required for MMC initialization

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez@oss.qualcomm.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by:
Link: https://lore.kernel.org/r/20250407175617.3494506-5-jorge.ramirez@oss.qualcomm.com
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/configs/dragonboard820c_defconfig b/configs/dragonboard820c_defconfig
index e29bea7..2a5b721 100644
--- a/configs/dragonboard820c_defconfig
+++ b/configs/dragonboard820c_defconfig
@@ -45,4 +45,6 @@
 CONFIG_DM_PMIC=y
 CONFIG_PMIC_QCOM=y
 CONFIG_MSM_SERIAL=y
+CONFIG_MSM_GPIO=y
 CONFIG_SPMI_MSM=y
+CONFIG_CLK_STUB=y