Changed test driver include folder to reflect it's a test driver

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
diff --git a/tests/src/drivers/signature.c b/tests/src/drivers/signature.c
index 5299a96..028d24a 100644
--- a/tests/src/drivers/signature.c
+++ b/tests/src/drivers/signature.c
@@ -30,7 +30,7 @@
 #include "psa_crypto_core.h"
 #include "mbedtls/ecp.h"
 
-#include "drivers/signature.h"
+#include "test/drivers/signature.h"
 
 #include "mbedtls/md.h"
 #include "mbedtls/ecdsa.h"