MAINTAINER: Include linux-arm-msm for Qualcomm RTC patches

Add Qualcomm RTC driver to the linux-arm-msm list, to ensure that
members of the Qualcomm community gets Cc'ed, to assist with reviews
etc.
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20240319-maintainer-msm-add-rtc-v1-1-3a4f7d41b4d4@quicinc.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

MAINTAINERS

@@ -2594,6 +2594,7 @@ F:	drivers/pci/controller/dwc/pcie-qcom.c
 F:	drivers/phy/qualcomm/
 F:	drivers/power/*/msm*
 F:	drivers/reset/reset-qcom-*
+F:	drivers/rtc/rtc-pm8xxx.c
 F:	drivers/spi/spi-geni-qcom.c
 F:	drivers/spi/spi-qcom-qspi.c
 F:	drivers/spi/spi-qup.c