pinctrl: abx500: fix build warning

pinctrl-abx500.c: In function 'abx500_gpio_dbg_show_one':
pinctrl-abx500.c:534:14: warning: 'pud' may be used
uninitialized in this function [-Wuninitialized]
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-abx500.c

@@ -504,7 +504,7 @@ static void abx500_gpio_dbg_show_one(struct seq_file *s,
 	int mode = -1;
 	bool is_out;
 	bool pd;
-	enum abx500_gpio_pull_updown pud;
+	enum abx500_gpio_pull_updown pud = 0;
 
 	const char *modes[] = {
 		[ABX500_DEFAULT]	= "default",