mfd/axp20x: change battery cell name to fuel gauge

Name changes to the battery cell structure to a
more generic cell type: fuel gauge.

Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Acked-By: Sebastian Reichel <sre@kernel.org>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

drivers/mfd/axp20x.c

@@ -87,7 +87,7 @@ static struct resource axp20x_pek_resources[] = {
 	},
 };
 
-static struct resource axp288_battery_resources[] = {
+static struct resource axp288_fuel_gauge_resources[] = {
 	{
 		.start = AXP288_IRQ_QWBTU,
 		.end   = AXP288_IRQ_QWBTU,
@@ -350,9 +350,9 @@ static struct mfd_cell axp288_cells[] = {
 		.resources = axp288_charger_resources,
 	},
 	{
-		.name = "axp288_battery",
-		.num_resources = ARRAY_SIZE(axp288_battery_resources),
-		.resources = axp288_battery_resources,
+		.name = "axp288_fuel_gauge",
+		.num_resources = ARRAY_SIZE(axp288_fuel_gauge_resources),
+		.resources = axp288_fuel_gauge_resources,
 	},
 	{
 		.name = "axp288_pmic_acpi",