regression: 4005: improve test coverage

Improves test coverage:
* in vect3 by feeding one full block and one almost full block
* in vect4 by feeding the first two blocks as complete blocks

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/host/xtest/regression_4000.c b/host/xtest/regression_4000.c
index 7bb442b..19092d3 100644
--- a/host/xtest/regression_4000.c
+++ b/host/xtest/regression_4000.c
@@ -2654,8 +2654,8 @@
 	XTEST_AE_CASE_AES_GCM(vect1, 0, 0, NULL_ARRAY, NULL_ARRAY, NULL_ARRAY),
 	XTEST_AE_CASE_AES_GCM(vect2, 0, 9, NULL_ARRAY, ARRAY, ARRAY),
 	XTEST_AE_CASE_AES_GCM(vect3, 0, 9, NULL_ARRAY, ARRAY, ARRAY),
-	XTEST_AE_CASE_AES_GCM(vect3, 0, 0x20, NULL_ARRAY, ARRAY, ARRAY),
-	XTEST_AE_CASE_AES_GCM(vect4, 5, 9, ARRAY, ARRAY, ARRAY),
+	XTEST_AE_CASE_AES_GCM(vect3, 0, 0x1F, NULL_ARRAY, ARRAY, ARRAY),
+	XTEST_AE_CASE_AES_GCM(vect4, 5, 0x20, ARRAY, ARRAY, ARRAY),
 	XTEST_AE_CASE_AES_GCM(vect5, 5, 9, ARRAY, ARRAY, ARRAY),
 	XTEST_AE_CASE_AES_GCM(vect6, 5, 9, ARRAY, ARRAY, ARRAY),
 	XTEST_AE_CASE_AES_GCM(vect7, 0, 0, NULL_ARRAY, NULL_ARRAY, NULL_ARRAY),