Add GPIO & VCHIQ HAL devices. Fix FlushDataCache macro to perform a clean &...
Add GPIO & VCHIQ HAL devices. Fix FlushDataCache macro to perform a clean & invalidate instead of just an invalidate. Detail: s/GPIO - Basic implementation of the GPIO HAL device to allow the GPIO module to detect the board type s/VCHIQ, hdr/StaticWS - New VCHIQ HAL device which exposes the functionality required by the work-in-progress VCHIQ driver. Makefile, s/Top - Hook up the new files/devices hdr/BCM2835 - Make the FlushDataCache macro perform a clean & invalidate, to match the behaviour of FlushDataCacheRange Admin: Tested on Raspberry Pi with high processor vectors Version 0.17. Tagged as 'BCM2835-0_17'
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