configs/odroidc2: bump kernel headers to 3.14.79

following commit 7de5b0d2d83bec38ec96ef5917259d9f46df58d4, bump kernel
headers to 3.14.79 to match the kernel version.

We cannot use BR2_KERNEL_HEADERS_AS_KERNEL as some of their kernel
modifications causes glibc to fail to build.

Signed-off-by: Dagg Stompler <daggs@gmx.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/odroidc2_defconfig

@@ -11,7 +11,7 @@ BR2_GCC_VERSION_4_9_X=y
 
 # Kernel
 BR2_KERNEL_HEADERS_VERSION=y
-BR2_DEFAULT_KERNEL_VERSION="3.14.29"
+BR2_DEFAULT_KERNEL_VERSION="3.14.79"
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_14=y
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_GIT=y