KVM: MIPS/Emulate: Adapt T&E CACHE emulation for Octeon

Cache management is implemented separately for Cavium Octeon CPUs, so
r4k_blast_[id]cache aren't available. Instead for Octeon perform a local
icache flush using local_flush_icache_range(), and for other platforms
which don't use c-r4k.c use __flush_cache_all() / flush_icache_all().

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Daney <david.daney@cavium.com>
Cc: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org

arch/mips/mm/cache.c

@@ -24,6 +24,7 @@
 /* Cache operations. */
 void (*flush_cache_all)(void);
 void (*__flush_cache_all)(void);
+EXPORT_SYMBOL_GPL(__flush_cache_all);
 void (*flush_cache_mm)(struct mm_struct *mm);
 void (*flush_cache_range)(struct vm_area_struct *vma, unsigned long start,
 	unsigned long end);