tests: drivers: dma: chan_link_transfer: Added LPC55S69 to Testcase

Added the LPC55S69 to the test case file for
dma_channel_chaining test.

Signed-off-by: Emilio Benavente <emilio.benavente@nxp.com>
diff --git a/tests/drivers/dma/chan_link_transfer/testcase.yaml b/tests/drivers/dma/chan_link_transfer/testcase.yaml
index 5631a8c..ba981b1 100644
--- a/tests/drivers/dma/chan_link_transfer/testcase.yaml
+++ b/tests/drivers/dma/chan_link_transfer/testcase.yaml
@@ -12,5 +12,6 @@
       - mimxrt1160_evk_cm7
       - mimxrt1170_evk_cm7
       - mimxrt1024_evk
+      - lpcxpresso55s69_cpu0
     integration_platforms:
       - frdm_k64f