arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem_abort

commit 3d08c629 upstream.

Commit:
b8865767 ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping

introduced some code in user_mem_abort that failed to compile if
STRICT_MM_TYPECHECKS was enabled.

This patch fixes up the failing comparison.
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Kim Phillips <kim.phillips@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

arch/arm/kvm/mmu.c

@@ -698,7 +698,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
 		kvm_set_pfn_dirty(pfn);
 	}
 	stage2_set_pte(vcpu->kvm, memcache, fault_ipa, &new_pte,
-		       mem_type == PAGE_S2_DEVICE);
+		pgprot_val(mem_type) == pgprot_val(PAGE_S2_DEVICE));
 
 out_unlock:
 	spin_unlock(&vcpu->kvm->mmu_lock);