sepolicy: Allow gnssd access modem_state

avc:  denied  { read } for  name="modem_state" dev="sysfs" ino=77641 scontext=u:r:gnssd:s0 tcontext=u:object_r:sysfs_modem_state:s0 tclass=file
avc:  denied  { open } for  path="/sys/devices/platform/cpif/modem_state" dev="sysfs" ino=77641 scontext=u:r:gnssd:s0 tcontext=u:object_r:sysfs_modem_state:s0 tclass=file
avc:  denied  { getattr } for  path="/sys/devices/platform/cpif/modem_state" dev="sysfs" ino=77641 scontext=u:r:gnssd:s0 tcontext=u:object_r:sysfs_modem_state:s0 tclass=file

Bug: 342284863
Test: b/342284863 for boot-health check.
Test: b/342284863 for function verification.
Change-Id: I1accfe367915737c14ee79dce71fe04cdcdbb727
diff --git a/gps/lsi/sepolicy/gnssd.te b/gps/lsi/sepolicy/gnssd.te
index 56ab51f..a293b95 100644
--- a/gps/lsi/sepolicy/gnssd.te
+++ b/gps/lsi/sepolicy/gnssd.te
@@ -31,3 +31,6 @@
 
 # Read RIL property
 get_prop(gnssd, vendor_rild_prop)
+
+# Read modme state
+allow gnssd sysfs_modem_state:file r_file_perms;