* MIPS: fixed passing CPU type specified with -CpXXX switch to assembler
  - removed mips_cpu variable and cpu_mips_default CPU type.
  * globals.pas: default CPU type changed to MIPS2, this is what was passed to assembler before.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24643 3ad0048d-3df7-0310-abae-a5850022a9f2