mfd: Convert remaining uses of pr_warning to pr_warn

To enable eventual removal of pr_warning

This makes pr_warn use consistent for drivers/mfd

Prior to this patch, there were 4 uses of pr_warning and
9 uses of pr_warn in drivers/mfd
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/db8500-prcmu.c

@@ -2377,7 +2377,7 @@ static void ack_dbb_wakeup(void)
 
 static inline void print_unknown_header_warning(u8 n, u8 header)
 {
-	pr_warning("prcmu: Unknown message header (%d) in mailbox %d.\n",
+	pr_warn("prcmu: Unknown message header (%d) in mailbox %d\n",
 		header, n);
 }
 

drivers/mfd/sta2x11-mfd.c

@@ -60,8 +60,8 @@ static struct sta2x11_mfd *sta2x11_mfd_find(struct pci_dev *pdev)
 	struct sta2x11_mfd *mfd;
 
 	if (!pdev && !list_empty(&sta2x11_mfd_list)) {
-		pr_warning("%s: Unspecified device, "
-			    "using first instance\n", __func__);
+		pr_warn("%s: Unspecified device, using first instance\n",
+			__func__);
 		return list_entry(sta2x11_mfd_list.next,
 				  struct sta2x11_mfd, list);
 	}

drivers/mfd/twl4030-power.c

@@ -502,9 +502,7 @@ static int load_twl4030_script(const struct twl4030_power_data *pdata,
 	}
 	if (tscript->flags & TWL4030_SLEEP_SCRIPT) {
 		if (!order)
-			pr_warning("TWL4030: Bad order of scripts (sleep "\
-					"script before wakeup) Leads to boot"\
-					"failure on some boards\n");
+			pr_warn("TWL4030: Bad order of scripts (sleep script before wakeup) Leads to boot failure on some boards\n");
 		err = twl4030_config_sleep_sequence(address);
 	}
 out:
@@ -930,8 +928,7 @@ static int twl4030_power_probe(struct platform_device *pdev)
 		err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
 				      TWL4030_PM_MASTER_CFG_P123_TRANSITION);
 		if (err) {
-			pr_warning("TWL4030 Unable to read registers\n");
-
+			pr_warn("TWL4030 Unable to read registers\n");
 		} else if (!(val & SEQ_OFFSYNC)) {
 			val |= SEQ_OFFSYNC;
 			err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val,