Ionela Voinescu authored Feb 03, 2019 and Thomas Abraham committed Feb 18, 2019

The old ramdisk-oe.img format is causing issues on 5.0 kernels in which
initramfs errors are no longer ignored:
ff1522bb7d98 ("initramfs: cleanup incomplete rootfs")

Update cpio command to use newc format, the new (SVR4) portable format,
which does not cause issues on recent kernels.

Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>