sheevaplug_defconfig: bump kernel version, lock u-boot version

Stick to 3.11.x for now, as sheevaplug has moved to DT only in 3.12+.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/sheevaplug_defconfig

@@ -13,17 +13,19 @@ BR2_TARGET_ROOTFS_JFFS2_NANDFLASH_2K_128K=y
 
 # Lock down headers to avoid breaking with new defaults
 BR2_KERNEL_HEADERS_VERSION=y
-BR2_DEFAULT_KERNEL_VERSION="3.5.4"
+BR2_DEFAULT_KERNEL_VERSION="3.11.8"
 
 # bootloader
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BOARDNAME="sheevaplug"
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2013.10"
 BR2_TARGET_UBOOT_FORMAT_KWB=y
 # BR2_TARGET_UBOOT_NETWORK is not set
 
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.5.4"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.11.8"
 BR2_LINUX_KERNEL_DEFCONFIG="kirkwood"
 BR2_LINUX_KERNEL_UIMAGE=y