soc/amd/common/block/lpc/spi_dma: Yield after completing transaction

There is no telling when the next udelay will be, so explicitly call
`thread_yield()` after completing a transaction. This will allow any
pending transactions to immediately start.

BUG=b:179699789
TEST=Verify new transaction is enqueued right after another.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I9c1272bde46c3e0c15305b76c2ea7a6dde5ed0b0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56321
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions