[mobile-broadband-provider-info] dtd: add initial attach apn type

[Thomas Haller <thaller src gnome org>]

commit b723b0147e0cc66a0ea479042c0c14480785c0f3
Author: Dragos Tatulea <dragos tatulea gmail com>
Date:   Tue Dec 13 16:51:19 2016 +0100

    dtd: add initial attach apn type
    
    This patch adds the "ia" apn  type to be able to provision 4G
    
    LTE has the concept of the Initial Attach APN for the
    initial PDP context. This initial PDP context is automatically
    attached once registered on an LTE network.
    
    oFono currently supports setting the Initial Attach APN but it
    has no way of provisioning this value.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775985

 serviceproviders.2.dtd |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/serviceproviders.2.dtd b/serviceproviders.2.dtd
index 497d972..37573a6 100644
--- a/serviceproviders.2.dtd
+++ b/serviceproviders.2.dtd
@@ -102,7 +102,7 @@
 <!ATTLIST plan type (prepaid|postpaid) #REQUIRED>
 
 <!ELEMENT usage EMPTY>
-<!ATTLIST usage type (internet|mms|wap) #REQUIRED>
+<!ATTLIST usage type (internet|mms|wap|ia) #REQUIRED>
 
 <!ELEMENT cdma (name*,
                 username?,