Fix after Andres comments

Move the include of the configuration file to the begninnig
diff --git a/include/polarssl/md.h b/include/polarssl/md.h
index e395870..9be55a9 100644
--- a/include/polarssl/md.h
+++ b/include/polarssl/md.h
@@ -27,18 +27,17 @@
 #define POLARSSL_MD_H
 
 #include <stddef.h>
-
-#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
-    !defined(inline) && !defined(__cplusplus)
-#define inline __inline
-#endif
-
 #if !defined(POLARSSL_CONFIG_FILE)
 #include "config.h"
 #else
 #include POLARSSL_CONFIG_FILE
 #endif
 
+#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
+    !defined(inline) && !defined(__cplusplus)
+#define inline __inline
+#endif
+
 #define POLARSSL_ERR_MD_FEATURE_UNAVAILABLE                -0x5080  /**< The selected feature is not available. */
 #define POLARSSL_ERR_MD_BAD_INPUT_DATA                     -0x5100  /**< Bad input parameters to function. */
 #define POLARSSL_ERR_MD_ALLOC_FAILED                       -0x5180  /**< Failed to allocate memory. */