Change error code value

Change the error code value to a low level value, as the low level
range upper limit is 0x7f

Author: Ron Eldor

include/mbedtls/error.h

@@ -71,7 +71,7 @@
  * CHACHA20  1                  0x0051-0x0051
  * POLY1305  1                  0x0057-0x0057
  * CHACHAPOLY 2 0x0054-0x0056
- * PLATFORM  1  0x0070-0x0082
+ * PLATFORM  1  0x0070-0x0072
  *
  * High-level module nr (3 bits - 0x0...-0x7...)
  * Name      ID  Nr of Errors

include/mbedtls/platform.h

@@ -44,7 +44,7 @@
 #endif
 
 #define MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED     -0x0070 /**< Hardware accelerator failed */
-#define MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED -0x0082 /**< The requested feature is not supported by the platform */
+#define MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED -0x0072 /**< The requested feature is not supported by the platform */
 
 #ifdef __cplusplus
 extern "C" {