configs/qemu: update ppc64 pseries

Switch to kernel 4.0.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

board/qemu/ppc64-pseries/readme.txt

@@ -4,4 +4,4 @@ Run the emulation with:
 
 The login prompt will appear in the terminal that started Qemu.
 
-Tested with QEMU 2.2.0
+Tested with QEMU 2.2.1

configs/qemu_ppc64_pseries_defconfig

@@ -10,14 +10,14 @@ BR2_TARGET_GENERIC_GETTY_PORT="hvc0"
 BR2_TARGET_ROOTFS_EXT2=y
 # BR2_TARGET_ROOTFS_TAR is not set
 
-# Lock to 3.19 headers to avoid breaking with newer kernels
+# Lock to 4.0 headers to avoid breaking with newer kernels
 BR2_KERNEL_HEADERS_VERSION=y
-BR2_DEFAULT_KERNEL_VERSION="3.19"
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_19=y
+BR2_DEFAULT_KERNEL_VERSION="4.0"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_0=y
 
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.19"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.0"
 BR2_LINUX_KERNEL_DEFCONFIG="pseries"
 BR2_LINUX_KERNEL_VMLINUX=y