soc: nxp_rw6xx: Update SYS_CLOCK_TICKS_PER_SEC for PM mode 3

Since the clock source when running in PM mode 3 is the
slower 1KHx clock, we adjust the SYS_CLOCK_TICKS_PER_SEC
value to get better accuracy.

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

soc/nxp/rw/Kconfig.defconfig

@@ -57,4 +57,12 @@ if WIFI
 orsource "Kconfig.defconfig.wifi"
 endif # WIFI
 
+if PM
+# For PM mode 3 we change this config to get better accuracy
+# when using the iKHz RTC clock as system clock.
+config SYS_CLOCK_TICKS_PER_SEC
+	default 1000
+	depends on $(dt_nodelabel_enabled,standby)
+endif
+
 endif # SOC_SERIES_RW6XX