hmp: Restore "info pci"

Dropped by commit da76ee76's
transition to hmp-commands-info.hx.
Reported-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <1442589509-10806-1-git-send-email-pbonzini@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>

hmp-commands-info.hx

@@ -181,6 +181,20 @@ STEXI
 @item info pic
 @findex pic
 Show i8259 (PIC) state.
+ETEXI
+
+    {
+        .name       = "pci",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show PCI info",
+        .mhandler.cmd = hmp_info_pci,
+    },
+
+STEXI
+@item info pci
+@findex pci
+Show PCI information.
 ETEXI
 
 #if defined(TARGET_I386) || defined(TARGET_SH4) || defined(TARGET_SPARC) || \