Updating mbed-os to mbed-os-5.9.4

Cruz Monrreal II · Seppo Takalo · commit 9575dc94b0f4 · 2018-07-31T16:09:16.000+03:00
diff --git a/mbed-os.lib b/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#50bd61a4a72332baa6b1bac6caccb44dc5423309
+https://github.com/ARMmbed/mbed-os/#485bdeee150e2bc8ed75e27d936060fb63a7a7d1

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-https://github.com/ARMmbed/mbed-os/#50bd61a4a72332baa6b1bac6caccb44dc5423309`
	`1`	`+https://github.com/ARMmbed/mbed-os/#485bdeee150e2bc8ed75e27d936060fb63a7a7d1`