blockdev: Move parsing of 'boot' option to drive_init

It's already ignored and only prints a deprecation message. No use in
making it available in new interfaces.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

blockdev.c

diff --git a/blockdev.c b/blockdev.c
index 8fa9510..d633f6e 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -452,12 +452,6 @@
         return NULL;
     }
 
-    if (qemu_opt_get(opts, "boot") != NULL) {
-        fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be "
-                "ignored. Future versions will reject this parameter. Please "
-                "update your scripts.\n");
-    }
-
     on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
     if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
         if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
@@ -709,6 +703,10 @@
             .name = "trans",
             .type = QEMU_OPT_STRING,
             .help = "chs translation (auto, lba, none)",
+        },{
+            .name = "boot",
+            .type = QEMU_OPT_BOOL,
+            .help = "(deprecated, ignored)",
         },
         { /* end of list */ }
     },
@@ -784,6 +782,13 @@
         goto fail;
     }
 
+    /* Deprecated option boot=[on|off] */
+    if (qemu_opt_get(legacy_opts, "boot") != NULL) {
+        fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be "
+                "ignored. Future versions will reject this parameter. Please "
+                "update your scripts.\n");
+    }
+
     /* Media type */
     value = qemu_opt_get(legacy_opts, "media");
     if (value) {
@@ -2328,10 +2333,6 @@
             .name = "copy-on-read",
             .type = QEMU_OPT_BOOL,
             .help = "copy read data from backing file into image file",
-        },{
-            .name = "boot",
-            .type = QEMU_OPT_BOOL,
-            .help = "(deprecated, ignored)",
         },
         { /* end of list */ }
     },