[nrf fromlist] logging: frontends: stmesp: Fix sending string location

String location information should only be sent for core which
do not append strings to the log message (PPR, FLPR). Without
this, cpurad was also sending that information and that was
redundant.

Upstream PR #: 86242

Signed-off-by: Krzysztof Chruściński <[email protected]>
(cherry picked from commit 5715c89)

Author: nordic-krch

subsys/logging/frontends/log_frontend_stmesp.c

@@ -581,7 +581,8 @@ void log_frontend_panic(void)
 
 void log_frontend_init(void)
 {
-#if defined(CONFIG_LOG_FRONTEND_STPESP_TURBO_SOURCE_PORT_ID) && !defined(CONFIG_NRF_ETR)
+#if	defined(CONFIG_LOG_FRONTEND_STPESP_TURBO_SOURCE_PORT_ID) && !defined(CONFIG_NRF_ETR) && \
+	!defined(CONFIG_LOG_MSG_APPEND_RO_STRING_LOC)
 	/* Send location of section with constant source data. It is used by the
 	 * application core to retrieve source names of log messages coming from
 	 * coprocessors (FLPR and PPR).