Signed U-Boot, Linux kernel and initramfs images for i.MX 6Quad

I developed signed U-Boot, Linux kernel and initramfs images for i.MX 6Quad in 2015. Used technologies:

• Freescale tools
• Timesys Linux toolchain
• U-Boot
• Buildroot

Signed U-Boot, Linux kernel and initramfs images authenticated by HAB.