Move README.md to LPC11XX_11CXX common

Author: omdathetkan

libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/TARGET_LPC11XX/README.md renamed to libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/README.md

@@ -1,3 +1,4 @@
-LPC1114 Port
+LPC1114/LPC11C24 Port
 --------------
 A port of the MBED SDK to the NXP LPC1114 by Yoshihiro Tsuboi, Toyomasa Watarai and Matthew Else.
+Extra, LPC11C24-specific things added by Joris Aerts.