tests/drivers: stm32l562e_dk: Configures DMA for chan_blen_transfer test

This commit configures the required DMA parameters to run
tests/drivers/dma/chan_blen_transfer test on stm32l562e_dk platform.
This has been tested and is working as expected.

Signed-off-by: Krishna Mohan Dani <krishnamohan.d@hcl.com>
2 files changed