gsm: Add Kasumi cipher implementation

Submitted-by: Max <max.suraev@fairwaves.co>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/.gitignore b/.gitignore
index 3fa1bbc..1299028 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,6 +56,7 @@
 tests/testsuite.log
 
 tests/utils/utils_test
+tests/kasumi/kasumi_test
 tests/sms/sms_test
 tests/timer/timer_test
 tests/msgfile/msgfile_test