minimal-printf: Add capability to run floating point tests manually

Author: hugueskamba

TESTS/mbed_platform/minimal-printf/compliance/README.md

@@ -6,6 +6,6 @@ This document describes how to run minimal-printf tests.
 
 You can use the following command to run tests:
 
-`mbed test -m K64F -t GCC_ARM -n *printf* -v -c`
+`mbed test -m K64F -t GCC_ARM -n *printf* -v -c --app-config TESTS/mbed_platform/minimal-printf/compliance/test_config.json`
 
 Do not use --profile minimal-printf so minimal-printf is not compared with itself.

TESTS/mbed_platform/minimal-printf/compliance/test_config.json

@@ -0,0 +1,7 @@
+{
+    "target_overrides": {
+        "*": {
+            "platform.minimal-printf-enable-floating-point": true
+        }
+    }
+}