qemu/x86_64: update to use kernel 3.2.6

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

configs/qemu_x86_64_defconfig

@@ -12,6 +12,6 @@ BR2_TARGET_ROOTFS_EXT2=y
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.2"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.2.6"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86_64/linux-3.2.config"