modules: lvgl: fix build warning for print format

Fix the following building warning:
modules/lvgl/lvgl_shell.c:62:41: warning: format '%u' expects argument
of type 'unsigned int', but argument 3 has type 'size_t' {aka 'long
unsigned int'} [-Wformat=]

Signed-off-by: Jiafei Pan <[email protected]>

Author: JiafeiPan

modules/lvgl/lvgl_shell.c

@@ -59,7 +59,7 @@ static void dump_monkey_info(const struct shell *sh)
 	shell_print(sh, "id   device    active");
 	for (size_t i = 0; i < CONFIG_LV_Z_MAX_MONKEY_COUNT; i++) {
 		if (lvgl_monkeys[i] != NULL) {
-			shell_print(sh, "%-4u %-9s %-3s", i,
+			shell_print(sh, "%-4zu %-9s %-3s", i,
 				    lvgl_monkey_indev_as_string(lvgl_monkeys[i]),
 				    lv_monkey_get_enable(lvgl_monkeys[i]) ? "yes" : "no");
 		}