logs-string-match.yaml: Add ramdisk failure string
Ramdisk failure has been observed with the following SoCs so far. jetson-tk1 rk3288-rock2-square rk3288-veyron-jaq tegra124-nyan-big
Hence, add a ramdisk failure string to identify SoCs with these type of infrastructure error.
Signed-off-by: Shreeya Patel shreeya.patel@collabora.com