qemu/x86: update defconfig to Linux 3.15.x

Update the default configuration to use Linux 3.15.x.
Enable ext4, so that ext2/ext3/ext4 can be used.
Tested with Qemu 2.0.0.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

board/qemu/x86/linux-3.13.config → board/qemu/x86/linux-3.15.config

@@ -47,7 +47,7 @@ CONFIG_SND_HDA_INTEL=y
 # CONFIG_USB_SUPPORT is not set
 # CONFIG_X86_PLATFORM_DEVICES is not set
 # CONFIG_DMIID is not set
-CONFIG_EXT2_FS=y
+CONFIG_EXT4_FS=y
 # CONFIG_DNOTIFY is not set
 # CONFIG_INOTIFY_USER is not set
 # CONFIG_MISC_FILESYSTEMS is not set

board/qemu/x86/readme.txt

@@ -4,4 +4,4 @@ Run the emulation with:
 
 The login prompt will appear in the graphical window.
 
-Tested with QEMU 1.7.0
+Tested with QEMU 2.0.0

configs/qemu_x86_defconfig

@@ -10,14 +10,14 @@ BR2_TARGET_GENERIC_GETTY_PORT="tty1"
 BR2_TARGET_ROOTFS_EXT2=y
 # BR2_TARGET_ROOTFS_TAR is not set
 
-# Lock to 3.13 headers to avoid breaking with newer kernels
+# Lock to 3.15 headers to avoid breaking with newer kernels
 BR2_KERNEL_HEADERS_VERSION=y
-BR2_DEFAULT_KERNEL_VERSION="3.13.5"
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_13=y
+BR2_DEFAULT_KERNEL_VERSION="3.15.7"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_15=y
 
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.13.5"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.15.7"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
-BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86/linux-3.13.config"
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86/linux-3.15.config"