configs/qemu: bump x86 to 4.3 kernel

Now that uclibc-ng was bumped to version 1.0.9 nothing prevents x86
from working correctly.

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

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 4.2 headers to avoid breaking with newer kernels
+# Lock to 4.3 headers to avoid breaking with newer kernels
 BR2_KERNEL_HEADERS_VERSION=y
-BR2_DEFAULT_KERNEL_VERSION="4.2.6"
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_2=y
+BR2_DEFAULT_KERNEL_VERSION="4.3"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_3=y
 
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.2.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.3"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
-BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86/linux-4.2.config"
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86/linux-4.3.config"