KVM: PPC: Remove DCR handling

DCR handling was only needed for 440 KVM. Since we removed it, we can also
remove handling of DCR accesses.

Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 51776ca..f6f24ae 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -162,7 +162,7 @@
 #define KVM_EXIT_TPR_ACCESS       12
 #define KVM_EXIT_S390_SIEIC       13
 #define KVM_EXIT_S390_RESET       14
-#define KVM_EXIT_DCR              15
+#define KVM_EXIT_DCR              15 /* deprecated */
 #define KVM_EXIT_NMI              16
 #define KVM_EXIT_INTERNAL_ERROR   17
 #define KVM_EXIT_OSI              18
@@ -268,7 +268,7 @@
 			__u64 trans_exc_code;
 			__u32 pgm_code;
 		} s390_ucontrol;
-		/* KVM_EXIT_DCR */
+		/* KVM_EXIT_DCR (deprecated) */
 		struct {
 			__u32 dcrn;
 			__u32 data;