operational SPI with OS5

Revision:
36:a71a29786c47
Parent:
35:bb184e64b703
Child:
37:8f3f0b8835f8
--- a/mbed-os.lib	Wed May 10 12:00:02 2017 +0100
+++ b/mbed-os.lib	Thu May 25 12:00:03 2017 +0100
@@ -1,1 +1,1 @@
-https://github.com/ARMmbed/mbed-os/#8d21974ba35e04c4854e5090c0f8283171664175
+https://github.com/ARMmbed/mbed-os/#5fff7e1daeb395aa3d1ecf3f9ec3f4fead3de0c2