gcc-patch: Add patch for 4.4.5 to support Sparc-leon processors

Gcc patch that adds hfleon (fpu,v7), hfleonv8 (fpu, v8), sfleon (softfpu,v7),
sfleonv8 (softfpu,v8) SPARC variants. Default cpu is selected with --with-cpu.
Adds leon pipeline descrption to gcc.

Signed-off-by: Konrad Eisele <konrad@gaisler.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>