genericx86: switch to Linux 3.14 from 3.10

Boot-tested on a NUC.

(From meta-yocto rev: ef7e8d3f250c66ff6ab422c9527fd8b3a5386234)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-yocto-bsp/conf/machine/include/genericx86-common.inc

@@ -2,7 +2,7 @@ include conf/machine/include/x86-base.inc
 MACHINE_FEATURES += "wifi efi pcbios"
 
 PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
-PREFERRED_VERSION_linux-yocto ?= "3.10%"
+PREFERRED_VERSION_linux-yocto ?= "3.14%"
 PREFERRED_PROVIDER_virtual/xserver ?= "xserver-xorg"
 XSERVER ?= "${XSERVER_X86_BASE} \
             ${XSERVER_X86_EXT} \