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/Kconfig b/drivers/gpio/Kconfig
index 3143ac7..082495b 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -230,11 +230,11 @@
 	  This enables support for the GPIOs found on the STMPE I/O
 	  Expanders.
 
-config GPIO_TC35892
-	bool "TC35892 GPIOs"
-	depends on MFD_TC35892
+config GPIO_TC3589X
+	bool "TC3589X GPIOs"
+	depends on MFD_TC3589X
 	help
-	  This enables support for the GPIOs found on the TC35892
+	  This enables support for the GPIOs found on the TC3589X
 	  I/O Expander.
 
 config GPIO_TWL4030