CMake: Add Maxim to the list of supported targets

Author: hugueskamba

tools/cmake/README.md

@@ -19,11 +19,10 @@ The full profile with the selected printf and C libraries.
 Only a limited set of targets is supported at the moment.
 
 The following targets are supported:
-- K64F
-- K66F
 - NRF52840_DK
 - ARM FM targets
 - Freescale targets
+- MAXIM targets
 - STM targets
 
 ### Supported toolchains