[Buildroot] Sparc Leon patches

[Konrad Eisele]

H,
I prepared 3 Sparc Leon patches. I'll send them as replay to this mail in
a minute. In short they do the following.

0001-config-Add-sparc-leon-processors.-Readd-V7-8-part-of.patch:
 Add Sparc Leon processors to target config.

0003-gcc-patch-Add-patch-for-4.4.5-to-support-Sparc-leon-.patch:
 Add support for gcc configure option --with-cpu.

0002-toolchain-Add-support-for-with-cpu.patch:
 Add gcc patch for 4.4.5 that enables the Sparc Leon variants.

I hope the formatting is ok.

-- Greetings Konrad