arm64: dts: qcom: pmk8550: always enable RTC PMIC device

There's no reason to keep the RTC disabled, it has been tested
and is functional on the SM8550 QRD and MTP boards.

Reviewed-by: Konrad Dybcio <[e-mail]>
Signed-off-by: Neil Armstrong <[e-mail]>
Signed-off-by: Bjorn Andersson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm64/boot/dts/qcom/pmk8550.dtsi

···
 			reg = <0x6100>, <0x6200>;
 			reg-names = "rtc", "alarm";
 			interrupts = <0x0 0x62 0x1 IRQ_TYPE_EDGE_RISING>;
-			status = "disabled";
 		};
 
 		pmk8550_sdam_2: nvram@7100 {