MBEDTLS_PSA_INJECT_ENTROPY: Skip incompatible tests

When MBEDTLS_PSA_INJECT_ENTROPY is enabled, we disable standard entropy
sources, so mbedtls_entropy_func() doesn't work out of the box. Disable
tests that rely on it. MBEDTLS_PSA_INJECT_ENTROPY is intended for PSA-only
environments anyway, so it doesn't matter if some legacy features don't work
normally.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_random.function b/tests/suites/test_suite_random.function
index 0df92b0..708a5d0 100644
--- a/tests/suites/test_suite_random.function
+++ b/tests/suites/test_suite_random.function
@@ -18,7 +18,7 @@
 
 /* END_HEADER */
 
-/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_C:MBEDTLS_CTR_DRBG_C */
+/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_C:!MBEDTLS_PSA_INJECT_ENTROPY:MBEDTLS_CTR_DRBG_C */
 void random_twice_with_ctr_drbg()
 {
     mbedtls_entropy_context entropy;
@@ -60,7 +60,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_C:MBEDTLS_HMAC_DRBG_C */
+/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_C:!MBEDTLS_PSA_INJECT_ENTROPY:MBEDTLS_HMAC_DRBG_C */
 void random_twice_with_hmac_drbg(int md_type)
 {
     mbedtls_entropy_context entropy;