pinctrl: sirf: drop marco support

marco chip has been dropped, clear its support.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 67c8db9..e738cca 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -113,7 +113,7 @@
 	  This selects the device tree based generic pinctrl driver.
 
 config PINCTRL_SIRF
-	bool "CSR SiRFprimaII/SiRFmarco pin controller driver"
+	bool "CSR SiRFprimaII pin controller driver"
 	depends on ARCH_SIRF
 	select PINMUX
 	select GPIOLIB_IRQCHIP