MIPS: traps: tidy up ebase calculation
MIPS: traps: tidy up ebase calculation

Rather than #ifdef on CONFIG_KVM_GUEST & redefine the guest kseg0 base
locally, make use of the CAC_BASE macro which has the correct value in
both cases.

Signed-off-by: Paul Burton <85f1bffadddedccfafc0ae065a06aa636075387f@imgtec.com>
Cc: James Hogan <547fa85bb3888a0222eed8ec39e36708605c6d53@imgtec.com>
Cc: 562397917b9a8bf316569a848858b12fb417723f@linux-mips.org
Cc: Leonid Yegoshin <d6aca6b5694d055adc6cbbaf8ff810fc31ed7c5d@imgtec.com>
Cc: Maciej W. Rozycki <78f3a3d9d6e4d907a7d12e475d0a751d6b7e256b@linux-mips.org>
Cc: 2578944098299abf708b08eff6fcf60565553586@vger.kernel.org
Cc: Markos Chandras <5cdbcb0e11d2b5ebc39222958c54a1c6329d0c9d@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11183/
Signed-off-by: Ralf Baechle <92f48d309cda194c8eda36aa8f9ae28c488fa208@linux-mips.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs