logger CHANGE rename ly_verb() to ly_log_level()

Align the setter function with the LY_LOG_LEVEL enums to simplify their
association.
diff --git a/tools/lint/commands.c b/tools/lint/commands.c
index 233b935..f487583 100644
--- a/tools/lint/commands.c
+++ b/tools/lint/commands.c
@@ -1397,22 +1397,22 @@
 
     verb = arg + 5;
     if (!strcmp(verb, "error") || !strcmp(verb, "0")) {
-        ly_verb(LY_LLERR);
+        ly_log_level(LY_LLERR);
 #ifndef NDEBUG
         ly_verb_dbg(0);
 #endif
     } else if (!strcmp(verb, "warning") || !strcmp(verb, "1")) {
-        ly_verb(LY_LLWRN);
+        ly_log_level(LY_LLWRN);
 #ifndef NDEBUG
         ly_verb_dbg(0);
 #endif
     } else if (!strcmp(verb, "verbose")  || !strcmp(verb, "2")) {
-        ly_verb(LY_LLVRB);
+        ly_log_level(LY_LLVRB);
 #ifndef NDEBUG
         ly_verb_dbg(0);
 #endif
     } else if (!strcmp(verb, "debug")  || !strcmp(verb, "3")) {
-        ly_verb(LY_LLDBG);
+        ly_log_level(LY_LLDBG);
 #ifndef NDEBUG
         ly_verb_dbg(LY_LDGDICT | LY_LDGYANG | LY_LDGYIN | LY_LDGXPATH | LY_LDGDIFF);
 #endif
diff --git a/tools/lint/main_ni.c b/tools/lint/main_ni.c
index a276030..8a94ee0 100644
--- a/tools/lint/main_ni.c
+++ b/tools/lint/main_ni.c
@@ -686,7 +686,7 @@
     }
 
     /* derefered setting of verbosity in libyang after context initiation */
-    ly_verb(verbose);
+    ly_log_level(verbose);
 
     if (ly_set_new(&mods)) {
         fprintf(stderr, "yanglint error: Preparing storage for the parsed modules failed.\n");