loader: Export the correct sketch log symbols.

The created sketch log structures depends on the config:

CONFIG_LOG (IMMEDIATE/DEFERRED): creates log_const_sketch struct.
CONFIG_LOG_RUNTIME_FILTERING (implied by CONFIG_SHELL): creates log_dynamic_sketch struct.
CONFIG_LOG_MODE_IMMEDIATE + CONFIG_SHELL: creates both.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

Author: iabdalkader

loader/llext_exports.c

@@ -82,9 +82,14 @@ EXPORT_SYMBOL(usb_enable);
 EXPORT_SYMBOL(usb_disable);
 #endif
 
+#if CONFIG_LOG
 EXPORT_SYMBOL(z_log_msg_runtime_vcreate);
+FORCE_EXPORT_SYM(log_const_sketch)
+#endif
 
+#if defined(CONFIG_LOG_RUNTIME_FILTERING)
 FORCE_EXPORT_SYM(log_dynamic_sketch)
+#endif
 
 #if defined(CONFIG_NETWORKING)
 FORCE_EXPORT_SYM(net_if_foreach);