MIPS: Fix duplicate CP0_* definitions.

Remove the definition in locore.S and move a few of the other similar
definitions in asm/mipsregs.h too. CP0_INTCTL, CP0_SRSCTL, & CP0_SRSMAP
are unused so they're just dropped instead. CP0_DDATA_LO is left where
it is as I have patches to eliminate its use in locore.S and it
otherwise is unlikely to need to be used from assembly code.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11461/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kvm/locore.S

@@ -36,14 +36,6 @@
 #define PT_HOST_USERLOCAL   PT_EPC
 
 #define CP0_DDATA_LO        $28,3
-#define CP0_CONFIG3         $16,3
-#define CP0_CONFIG5         $16,5
-#define CP0_EBASE           $15,1
-
-#define CP0_INTCTL          $12,1
-#define CP0_SRSCTL          $12,2
-#define CP0_SRSMAP          $12,3
-#define CP0_HWRENA          $7,0
 
 /* Resume Flags */
 #define RESUME_FLAG_HOST        (1<<1)  /* Resume host? */