qcom_defconfig: enable qcom pmic button

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/configs/qcom_defconfig b/configs/qcom_defconfig
index 1e3ac6a..f0544ae 100644
--- a/configs/qcom_defconfig
+++ b/configs/qcom_defconfig
@@ -53,6 +53,7 @@
 CONFIG_QCOM_PMIC_GPIO=y
 CONFIG_DM_KEYBOARD=y
 CONFIG_BUTTON_KEYBOARD=y
+CONFIG_BUTTON_QCOM_PMIC=y
 CONFIG_IOMMU=y
 CONFIG_ARM_SMMU=y
 CONFIG_MISC=y