mfd: Add missing max8997 static storage class specifier

Fixes the following sparse warnings:
drivers/mfd/max8997.c:209:4: warning: symbol 'max8997_dumpaddr_pmic' was not declared. Should it be static?
drivers/mfd/max8997.c:334:4: warning: symbol 'max8997_dumpaddr_muic' was not declared. Should it be static?
drivers/mfd/max8997.c:344:4: warning: symbol 'max8997_dumpaddr_haptic' was not declared. Should it be static?
drivers/mfd/max8997.c:426:25: warning: symbol 'max8997_pm' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/max8997.c

@@ -206,7 +206,7 @@ static const struct i2c_device_id max8997_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, max8998_i2c_id);
 
-u8 max8997_dumpaddr_pmic[] = {
+static u8 max8997_dumpaddr_pmic[] = {
 	MAX8997_REG_INT1MSK,
 	MAX8997_REG_INT2MSK,
 	MAX8997_REG_INT3MSK,
@@ -331,7 +331,7 @@ u8 max8997_dumpaddr_pmic[] = {
 	MAX8997_REG_DVSOKTIMER5,
 };
 
-u8 max8997_dumpaddr_muic[] = {
+static u8 max8997_dumpaddr_muic[] = {
 	MAX8997_MUIC_REG_INTMASK1,
 	MAX8997_MUIC_REG_INTMASK2,
 	MAX8997_MUIC_REG_INTMASK3,
@@ -341,7 +341,7 @@ u8 max8997_dumpaddr_muic[] = {
 	MAX8997_MUIC_REG_CONTROL3,
 };
 
-u8 max8997_dumpaddr_haptic[] = {
+static u8 max8997_dumpaddr_haptic[] = {
 	MAX8997_HAPTIC_REG_CONF1,
 	MAX8997_HAPTIC_REG_CONF2,
 	MAX8997_HAPTIC_REG_DRVCONF,
@@ -423,7 +423,7 @@ static int max8997_resume(struct device *dev)
 	return max8997_irq_resume(max8997);
 }
 
-const struct dev_pm_ops max8997_pm = {
+static const struct dev_pm_ops max8997_pm = {
 	.suspend = max8997_suspend,
 	.resume = max8997_resume,
 	.freeze = max8997_freeze,