pinctrl: mvebu: Use seq_putc() in mvebu_pinconf_group_dbg_show()

Single characters should be put into a sequence.
Thus use the corresponding function "seq_putc".

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mvebu/pinctrl-mvebu.c

@@ -188,12 +188,12 @@ static void mvebu_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
 		if (curr->subname)
 			seq_printf(s, "(%s)", curr->subname);
 		if (curr->flags & (MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
-			seq_printf(s, "(");
+			seq_putc(s, '(');
 			if (curr->flags & MVEBU_SETTING_GPI)
-				seq_printf(s, "i");
+				seq_putc(s, 'i');
 			if (curr->flags & MVEBU_SETTING_GPO)
-				seq_printf(s, "o");
-			seq_printf(s, ")");
+				seq_putc(s, 'o');
+			seq_putc(s, ')');
 		}
 	} else {
 		seq_puts(s, "current: UNKNOWN");
@@ -215,12 +215,12 @@ static void mvebu_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
 				seq_printf(s, "(%s)", grp->settings[n].subname);
 			if (grp->settings[n].flags &
 				(MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
-				seq_printf(s, "(");
+				seq_putc(s, '(');
 				if (grp->settings[n].flags & MVEBU_SETTING_GPI)
-					seq_printf(s, "i");
+					seq_putc(s, 'i');
 				if (grp->settings[n].flags & MVEBU_SETTING_GPO)
-					seq_printf(s, "o");
-				seq_printf(s, ")");
+					seq_putc(s, 'o');
+				seq_putc(s, ')');
 			}
 		}
 		seq_puts(s, " ]");