dmaengine/ste_dma40: use AMBA PrimeCell helper macros
The DMA40 is not a PrimeCell from ARM, but it still use the same ID registers. So let's utilize the existing macros in the PrimeCell header to identify manufacturer and revision of the IP block instead of reinventing the wheel. Cc: Robert Marklund <robert.marklund@stericsson.com> Cc: Per Forlin <per.forlin@linaro.org> Cc: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by:Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
Vinod Koul <vinod.koul@intel.com>
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