qemu-log: Rename cpu_str_to_log_mask to qemu_str_to_log_mask

Rename cpu_str_to_log_mask() to qemu_str_to_log_mask(), since
the qemu_log functionality is no longer restricted to TCG CPU
debug logging.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

linux-user/main.c

@@ -3099,7 +3099,7 @@ static void handle_arg_log(const char *arg)
 {
     int mask;
 
-    mask = cpu_str_to_log_mask(arg);
+    mask = qemu_str_to_log_mask(arg);
     if (!mask) {
         qemu_print_log_usage(stdout);
         exit(1);