MCU_LPC546XX - breaks on master

[deepikabhavnani]

Description

mbed test --compile -m MCU_LPC546XX -t GCC_ARM

Copy: LPC54628J512.ld
Compile [  0.1%]: mbed_tz_context.c
Compile [  0.3%]: except.S
Compile [  0.4%]: mbed_fault_handler.c
[Fatal Error] mbed_fault_handler.c@23,10: device.h: No such file or directory
[DEBUG] Return: 1
[DEBUG] Output: .\mbed-os\cmsis\TARGET_CORTEX_M\mbed_fault_handler.c:23:10: fatal error: device.h: No such file or directory
[DEBUG] Output:  #include "device.h"
[DEBUG] Output:           ^~~~~~~~~~
[DEBUG] Output: compilation terminated.
Failed to build library

### Issue request type
    [ ] Question
    [ ] Enhancement
    [X] Bug

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/MBOCUSTRIA-369

[deepikabhavnani]

CC @ARMmbed/team-nxp