dma-mapping: rename trace_dma_*map_page to trace_dma_*map_phys

As a preparation for following map_page -> map_phys API conversion,
let's rename trace_dma_*map_page() to be trace_dma_*map_phys().

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/c0c02d7d8bd4a148072d283353ba227516a76682.1757423202.git.leonro@nvidia.com