Add GEA3 & GEA4 ciphers

Corresponding test code include both official test vectors from the
specs and data from over-the-air tests.

This obsoletes libosmo-crypt-a53 as it was last missing piece
unimplemented in libosmogsm.

Change-Id: I939e4f6b91b4a7c591ef3761fe2d46ed1c2fb2d3
Related: OS#1582
diff --git a/src/gsm/Makefile.am b/src/gsm/Makefile.am
index 781f153..0f43f48 100644
--- a/src/gsm/Makefile.am
+++ b/src/gsm/Makefile.am
@@ -24,10 +24,10 @@
 			conv_tch_afs_6_7_gen.c conv_tch_afs_5_9_gen.c \
 			conv_tch_afs_5_15_gen.c conv_tch_afs_4_75_gen.c \
 			auth_core.c auth_comp128v1.c auth_comp128v23.c \
-			auth_milenage.c milenage/aes-encblock.c \
+			auth_milenage.c milenage/aes-encblock.c gea.c \
 			milenage/aes-internal.c milenage/aes-internal-enc.c \
 			milenage/milenage.c gan.c ipa.c gsm0341.c apn.c \
-			gsup.c
+			gsup.c gprs_gea.c
 libgsmint_la_LDFLAGS = -no-undefined
 libgsmint_la_LIBADD = ../libosmocore.la