regression: add 41xx arithmetic tests

Adds a new 41xx series of for arithmetic tests. The test cases in
os_test TA in the tb_*.c and testframework.c files has been converted to
xtest format. The tests are now performed on TEE Internal API instead of
directly on the libmpa interace.

A few cases has been dropped, for instance random divisions. GCD and
FMM cases added.

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/Android.mk b/Android.mk
index 1476426..73d1fb7 100644
--- a/Android.mk
+++ b/Android.mk
@@ -42,6 +42,7 @@
 	benchmark_1000.c \
 	benchmark_2000.c \
 	regression_4000.c \
+	regression_4100.c \
 	regression_5000.c \
 	regression_6000.c \
 	regression_7000.c \