tests: drivers: Fix dma channel link test

The Kconfig symbol CONFIG_DMA_0_NAME was recently removed. Update the
dma channel link transfer test to get the device name from an
application level Kconfig instead, similar to other dma driver tests.

This fixes a CI compliance failure that checks for references to
undefined Kconfig symbols.

Tested on the mimxrt1050_evk board.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>