Guard some tests by presence of strong entropy
diff --git a/tests/suites/test_suite_entropy.function b/tests/suites/test_suite_entropy.function
index 3b739cc..19796a3 100644
--- a/tests/suites/test_suite_entropy.function
+++ b/tests/suites/test_suite_entropy.function
@@ -40,7 +40,7 @@
  * END_DEPENDENCIES
  */
 
-/* BEGIN_CASE depends_on:MBEDTLS_FS_IO */
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:ENTROPY_HAVE_STRONG */
 void entropy_seed_file( char *path, int ret )
 {
     mbedtls_entropy_context ctx;
@@ -80,7 +80,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:ENTROPY_HAVE_STRONG */
 void entropy_func_len( int len, int ret )
 {
     mbedtls_entropy_context ctx;
@@ -141,7 +141,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:ENTROPY_HAVE_STRONG */
 void entropy_threshold( int threshold, int chunk_size, int result )
 {
     mbedtls_entropy_context ctx;
@@ -172,7 +172,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
+/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST:ENTROPY_HAVE_STRONG */
 void entropy_selftest( )
 {
     TEST_ASSERT( mbedtls_entropy_self_test( 0 ) == 0 );
diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index bdf3db8..181eb0d 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -658,7 +658,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_CTR_DRBG_C:MBEDTLS_ENTROPY_C */
+/* BEGIN_CASE depends_on:MBEDTLS_CTR_DRBG_C:MBEDTLS_ENTROPY_C:ENTROPY_HAVE_STRONG */
 void mbedtls_rsa_gen_key( int nrbits, int exponent, int result)
 {
     mbedtls_rsa_context ctx;