Remove reserved registers from tcg_target_reg_alloc_order

Noticed by Andreas Faerber

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7080 c046a42c-6fe2-441c-8c8c-71466251a162

tcg/ppc/tcg-target.c

@@ -112,9 +112,6 @@ static const int tcg_target_reg_alloc_order[] = {
 #ifndef __linux__
     TCG_REG_R13,
 #endif
-    TCG_REG_R0,
-    TCG_REG_R1,
-    TCG_REG_R2,
     TCG_REG_R24,
     TCG_REG_R25,
     TCG_REG_R26,