arm64: defconfig: Enable the PM8xxx RTC driver

Enable the driver for the real time clock found in the PMICs on various
Qualcomm platforms.
Signed-off-by: NGeorgi Djakov <georgi.djakov@linaro.org>
Link: https://lore.kernel.org/r/20200616090324.6976-1-georgi.djakov@linaro.orgSigned-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/configs/defconfig

@@ -760,6 +760,7 @@ CONFIG_RTC_DRV_S3C=y
 CONFIG_RTC_DRV_PL031=y
 CONFIG_RTC_DRV_SUN6I=y
 CONFIG_RTC_DRV_ARMADA38X=y
+CONFIG_RTC_DRV_PM8XXX=m
 CONFIG_RTC_DRV_TEGRA=y
 CONFIG_RTC_DRV_SNVS=m
 CONFIG_RTC_DRV_IMX_SC=m