mfd: Use correct variable name for tps65910 regmap config

This was the copy-paste issue in reg cache support code where
variable name for regmap config was not really starting from
the device name, it was starting from some other device name.
Fixing this so that variable name contains actual device name.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/tps65910.c

@@ -81,7 +81,7 @@ static bool is_volatile_reg(struct device *dev, unsigned int reg)
 	return true;
 }
 
-static const struct regmap_config rc5t583_regmap_config = {
+static const struct regmap_config tps65910_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.volatile_reg = is_volatile_reg,
@@ -120,7 +120,7 @@ static int tps65910_i2c_probe(struct i2c_client *i2c,
 	tps65910->write = tps65910_i2c_write;
 	mutex_init(&tps65910->io_mutex);
 
-	tps65910->regmap = regmap_init_i2c(i2c, &rc5t583_regmap_config);
+	tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config);
 	if (IS_ERR(tps65910->regmap)) {
 		ret = PTR_ERR(tps65910->regmap);
 		dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);