HOSTCC  arch/powerpc/boot/hack-coff
  HOSTCC  arch/powerpc/boot/mktree
powerpc64-unknown-linux-gnu-strip -s -R .comment vmlinux -o vmlinux.strip
  WRAP    arch/powerpc/boot/zImage.ps3
dtc: invalid option -- b
Usage:
        dtc [options] <input file>

Options:
        -I <input format>
                Input formats are:
                        dts - device tree source text
                        dtb - device tree blob
                        fs - /proc/device-tree style directory
        -O <output format>
                Output formats are:
                        dts - device tree source text
                        dtb - device tree blob
                        asm - assembler source
        -V <output version>
                Blob version to produce, defaults to 3 (relevant for dtb
                and asm output only)
        -R <number>
                Make space for <number> reserve map entries (relevant for
                dtb and asm output only)
        -f
                Force - try to produce output even if the input tree has errors
make[1]: *** [arch/powerpc/boot/zImage.ps3] Error 1
make: *** [zImage] Error 2