mfd/tc35892: rename tc35892 core driver to tc3589x

Rename the tc35892 core/gpio drivers to tc3589x to include
new variants in the same mfd core

Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index bdf3dde..39bfd7a 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -24,7 +24,7 @@
 obj-$(CONFIG_GPIO_PCH)		+= pch_gpio.o
 obj-$(CONFIG_GPIO_PL061)	+= pl061.o
 obj-$(CONFIG_GPIO_STMPE)	+= stmpe-gpio.o
-obj-$(CONFIG_GPIO_TC35892)	+= tc35892-gpio.o
+obj-$(CONFIG_GPIO_TC3589X)	+= tc3589x-gpio.o
 obj-$(CONFIG_GPIO_TIMBERDALE)	+= timbgpio.o
 obj-$(CONFIG_GPIO_TWL4030)	+= twl4030-gpio.o
 obj-$(CONFIG_GPIO_UCB1400)	+= ucb1400_gpio.o