[nrf fromlist] soc: nordic: sys_event: align to errno codes in nrfx

NRFX drivers now return errno codes, aligned driver.

Upstream PR #: 97997

Signed-off-by: Michał Stasiak <[email protected]>

Author: mstasiaknordic

soc/nordic/common/nrf_sys_event.c

@@ -76,20 +76,12 @@ int nrf_sys_event_release_global_constlat(void)
 
 int nrf_sys_event_request_global_constlat(void)
 {
-	nrfx_err_t err;
-
-	err = nrfx_power_constlat_mode_request();
-
-	return (err == NRFX_SUCCESS || err == NRFX_ERROR_ALREADY) ? 0 : -EAGAIN;
+	return nrfx_power_constlat_mode_request();
 }
 
 int nrf_sys_event_release_global_constlat(void)
 {
-	nrfx_err_t err;
-
-	err = nrfx_power_constlat_mode_free();
-
-	return (err == NRFX_SUCCESS || err == NRFX_ERROR_BUSY) ? 0 : -EAGAIN;
+	return nrfx_power_constlat_mode_free();
 }
 
 #endif