linux-user: netlink: Add missing IFA_PROTO to host_to_target_data_addr_rtattr()

Fix this warning:
 Unknown host IFA type: 11

While adding IFA_PROTO, convert all IFA_XXX values over to QEMU_IFA_XXX values
to avoid a build failure on Ubuntu 22.04 (kernel v5.18 which does not know
IFA_PROTO yet).

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>

linux-user/fd-trans.c

@@ -31,6 +31,22 @@
 #include "fd-trans.h"
 #include "signal-common.h"
 
+enum {
+    QEMU_IFA_UNSPEC,
+    QEMU_IFA_ADDRESS,
+    QEMU_IFA_LOCAL,
+    QEMU_IFA_LABEL,
+    QEMU_IFA_BROADCAST,
+    QEMU_IFA_ANYCAST,
+    QEMU_IFA_CACHEINFO,
+    QEMU_IFA_MULTICAST,
+    QEMU_IFA_FLAGS,
+    QEMU_IFA_RT_PRIORITY,
+    QEMU_IFA_TARGET_NETNSID,
+    QEMU_IFA_PROTO,
+    QEMU__IFA__MAX,
+};
+
 enum {
     QEMU_IFLA_BR_UNSPEC,
     QEMU_IFLA_BR_FORWARD_DELAY,
@@ -1138,20 +1154,21 @@ static abi_long host_to_target_data_addr_rtattr(struct rtattr *rtattr)
 
     switch (rtattr->rta_type) {
     /* binary: depends on family type */
-    case IFA_ADDRESS:
-    case IFA_LOCAL:
+    case QEMU_IFA_ADDRESS:
+    case QEMU_IFA_LOCAL:
+    case QEMU_IFA_PROTO:
         break;
     /* string */
-    case IFA_LABEL:
+    case QEMU_IFA_LABEL:
         break;
     /* u32 */
-    case IFA_FLAGS:
-    case IFA_BROADCAST:
+    case QEMU_IFA_FLAGS:
+    case QEMU_IFA_BROADCAST:
         u32 = RTA_DATA(rtattr);
         *u32 = tswap32(*u32);
         break;
     /* struct ifa_cacheinfo */
-    case IFA_CACHEINFO:
+    case QEMU_IFA_CACHEINFO:
         ci = RTA_DATA(rtattr);
         ci->ifa_prefered = tswap32(ci->ifa_prefered);
         ci->ifa_valid = tswap32(ci->ifa_valid);
@@ -1398,8 +1415,8 @@ static abi_long target_to_host_data_addr_rtattr(struct rtattr *rtattr)
 {
     switch (rtattr->rta_type) {
     /* binary: depends on family type */
-    case IFA_LOCAL:
-    case IFA_ADDRESS:
+    case QEMU_IFA_LOCAL:
+    case QEMU_IFA_ADDRESS:
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "Unknown target IFA type: %d\n",