Revert "added DMA masks also to SPI driver setup"

This reverts commit 6a51f6ae42b97aba7178f6d054f964710e334364.
Revert "Revert "added DMA masks also to SPI driver setup""

This reverts commit ccbed2d2470452c2809a7e1e3f26d5fbf11048e2.
Revert "Make the upstream spi-bcm2835.c driver work also on the raspbian kernel."

This reverts commit 32cdb926ee4e6f6f6c6a16dc894b793a1ba20141.