ARM: dove: drop "select COMMON_CLK_DOVE"

Commit 5b03df9a ("ARM: dove: switch to
DT clock providers") added "select COMMON_CLK_DOVE" to Marvell Dove's
Kconfig entry. But there's no Kconfig symbol COMMON_CLK_DOVE, which
makes this select statement a nop. It's probably a leftover of some
experimental code that never hit mainline. Drop it.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

arch/arm/Kconfig

@@ -556,7 +556,6 @@ config ARCH_IXP4XX
 config ARCH_DOVE
 	bool "Marvell Dove"
 	select ARCH_REQUIRE_GPIOLIB
-	select COMMON_CLK_DOVE
 	select CPU_V7
 	select GENERIC_CLOCKEVENTS
 	select MIGHT_HAVE_PCI