This change moves all PDL drivers into common source and include
directories to alleviate issue with Windows version of GNU Make 4.x
maximum command line length limit.
The targets/TARGET_Cypress/TARGET_PSOC6 is dedicated to the mbed-os HAL
and PSoC 6 MCU targets developed by Cypress Semiconductor. Move the
existing port developed by Future Electronics to TARGET_PSOC_FUTURE
and update the labels in targets.json appropriately.