[ARM] pxa: remove duplicate select statements from Kconfig

ARCH_PXA selects HAVE_CLK and COMMON_CLKDEV twice in arch/arm/Kconfig.
Remove the second entry.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Eric Miao <eric.miao@marvell.com>

arch/arm/Kconfig

@@ -486,8 +486,6 @@ config ARCH_PXA
 	select HAVE_CLK
 	select COMMON_CLKDEV
 	select ARCH_REQUIRE_GPIOLIB
-	select HAVE_CLK
-	select COMMON_CLKDEV
 	select GENERIC_TIME
 	select GENERIC_CLOCKEVENTS
 	select TICK_ONESHOT