Reorganisation of NUCLEO_L053R8 and DISCO_L053C8 cmsis folders  - part1

Delete cmsis files of disco_l053c8
Reorganisation of NUCLEO_L053R8 and DISCO_L053C8 cmsis folders  - part2

Deletes cmsis files of nucleo_l053c8
Reorganisation of NUCLEO_L053R8 and DISCO_L053C8 cmsis folders  - part3

Moves target/toolchain specific files to new location
Reorganisation of NUCLEO_L053R8 and DISCO_L053C8 cmsis folders  - part4

Moves cmsis files to new location.
Merge branch 'rework_cmsis_stm32l0' of github.com:ohagendorf/mbed into ohagendorf-rework_cmsis_stm32l0
Merge branch 'ohagendorf-rework_cmsis_stm32l0'