mips: define KVM_USER_MEM_SLOTS

mips: define KVM_USER_MEM_SLOTS

ARCH=mips, config=fuloong2e_defconfig:

akpm3:/usr/src/25> make arch/mips/kernel/early_printk.o
...
CC      arch/mips/kernel/asm-offsets.s
In file included from arch/mips/kernel/asm-offsets.c:20:
include/linux/kvm_host.h:334: error: `KVM_USER_MEM_SLOTS' undeclared here (not in a function)

Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>