[ARM] pxa: select CPU_PXA310 for MACH_COLIBRI300

MACH_COLIBRI300 is supposed to support both PXA300 and PXA310, select
the missing CPU_PXA310.

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Acked-by: Daniel Mack <daniel@caiaq.de>

arch/arm/mach-pxa/Kconfig

diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index ca2bd59..4bd0f87 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -254,6 +254,7 @@
 	bool "Toradex Colibri PXA300/310"
 	select PXA3xx
 	select CPU_PXA300
+	select CPU_PXA310
 
 config MACH_COLIBRI320
 	bool "Toradex Colibri PXA320"