ARM: mmp: rename SHEEVAD to GPLUGD

GuruPlugD was initially named to be SHEEVAD, and it's causing naming
confusion in the mach-types database. Make it consistent by renaming
to GPLUGD.

Reported-and-Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Tanmay Upadhyay <tanmay.upadhyay@einfochips.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig
index 56ef5f6..323d4c9 100644
--- a/arch/arm/mach-mmp/Kconfig
+++ b/arch/arm/mach-mmp/Kconfig
@@ -77,7 +77,7 @@
 	  Say 'Y' here if you want to support the Marvell PXA168-based
 	  Teton BGA Development Board.
 
-config MACH_SHEEVAD
+config MACH_GPLUGD
 	bool "Marvell's PXA168 GuruPlug Display (gplugD) Board"
 	select CPU_PXA168
 	help