psa: Avoid use of relative include paths
Relative include paths should be avoided. The build system will
determine where to pull in includes from. Specifically, `#include
"../mbedtls/config.h"` shouldn't be used. Use `#include
"mbedtls/config.h` instead, so that the submodule-building makefiles can
change which directory to use to get mbedtls include files from.
Fixes #141
diff --git a/include/psa/crypto_struct.h b/include/psa/crypto_struct.h
index 8850357..53da2a8 100644
--- a/include/psa/crypto_struct.h
+++ b/include/psa/crypto_struct.h
@@ -38,7 +38,7 @@
/* Include the Mbed TLS configuration file, the way Mbed TLS does it
* in each of its header files. */
#if !defined(MBEDTLS_CONFIG_FILE)
-#include "../mbedtls/config.h"
+#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif