Allow for building the MIPS DSPr2 extensions if the host is mips-* as well as mipsel-*.  The DSPr2 extensions are little endian, so we still have to check that the compiler defines __MIPSEL__ before enabling them.  This paves the way for supporting big-endian MIPS, and in the near term, it allows the SIMD extensions to be built with Sourcery CodeBench.


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1316 632fc199-4ca6-4c93-a231-07263d6284db