clk: tango4: rename ARCH_TANGOX to ARCH_TANGO

Requested by arm-soc maintainer Kevin Hilman in v9 review.
http://article.gmane.org/gmane.linux.ports.arm.kernel/456331

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/Makefile

@@ -43,7 +43,7 @@ obj-$(CONFIG_COMMON_CLK_SI514)		+= clk-si514.o
 obj-$(CONFIG_COMMON_CLK_SI570)		+= clk-si570.o
 obj-$(CONFIG_COMMON_CLK_CDCE925)	+= clk-cdce925.o
 obj-$(CONFIG_ARCH_STM32)		+= clk-stm32f4.o
-obj-$(CONFIG_ARCH_TANGOX)		+= clk-tango4.o
+obj-$(CONFIG_ARCH_TANGO)		+= clk-tango4.o
 obj-$(CONFIG_CLK_TWL6040)		+= clk-twl6040.o
 obj-$(CONFIG_ARCH_U300)			+= clk-u300.o
 obj-$(CONFIG_ARCH_VT8500)		+= clk-vt8500.o