Adding missing NI_TYPE for emergency SUPL

Bug: 37409476
Test: Builds, and on Pixel, basic GPS & XTRA tests pass.
Partners & Pixel team running the SUPL emergency tests.

Change-Id: I6b23608e82dc1682d61a516ab5045d3b78b53cae
diff --git a/current.txt b/current.txt
index 575e8fa..faedc04 100644
--- a/current.txt
+++ b/current.txt
@@ -91,7 +91,7 @@
 af85aa0f48ae99a39f4688c344e4419304f681f9af818a5c8d759286fc4418de android.hardware.gnss@1.0::IGnssNavigationMessage
 649b1b0fb98bdd3a1ace84f4e08bfa2df813afdd4862856693f107c281a929ba android.hardware.gnss@1.0::IGnssNavigationMessageCallback
 248bcf51da4273d64f367bf6877baef2feeaca365459842fd3c214a2dc6e0224 android.hardware.gnss@1.0::IGnssNi
-e4f2c1b80172a73e2e743fba3ddc24ef58bc42d40bdb8f7352c9e19440b220eb android.hardware.gnss@1.0::IGnssNiCallback
+c781b7b125f68be5db8a8c3d412d526acdbdf77dcc592a4c0ed70b8ce4fe6c49 android.hardware.gnss@1.0::IGnssNiCallback
 c1142657de16fdb292a502372fe938614d65270ab8359217d6e13604fe4dbca4 android.hardware.gnss@1.0::IGnssXtra
 bd366b83d8d565d0e8bfabff3adfcab0259d75b4e2a9f8e1b91e11d1593a2ffb android.hardware.gnss@1.0::IGnssXtraCallback
 881bc2f94026784d194cffbff166c6e8bf911de4e02abe96fc7d89ec75b0574a android.hardware.gnss@1.0::types
diff --git a/gnss/1.0/IGnssNiCallback.hal b/gnss/1.0/IGnssNiCallback.hal
index 163ba25..3e3071a 100644
--- a/gnss/1.0/IGnssNiCallback.hal
+++ b/gnss/1.0/IGnssNiCallback.hal
@@ -25,7 +25,8 @@
     enum GnssNiType : uint8_t {
         VOICE           = 1,
         UMTS_SUPL       = 2,
-        UMTS_CTRL_PLANE = 3
+        UMTS_CTRL_PLANE = 3,
+        EMERGENCY_SUPL  = 4
     };
 
     /**