tests: drivers: Extend dma channel link test to mimxrt1064_evk board

Adds mimxrt1064_evk to the list of allowed platforms for the dma channel
link test.

Signed-off-by: Maureen Helm <[email protected]>

Author: MaureenHelm

tests/drivers/dma/chan_link_transfer/testcase.yaml

@@ -3,11 +3,11 @@ tests:
     min_ram: 16
     depends_on: dma
     tags: drivers dma
-    platform_allow: frdm_k64f mimxrt1060_evk
+    platform_allow: frdm_k64f mimxrt1060_evk mimxrt1064_evk
   drivers.dma.interactive:
     depends_on: dma
     extra_args: CONF_FILE=prj_shell.conf
     min_ram: 16
     tags: drivers dma
     harness: keyboard
-    platform_allow: frdm_k64f mimxrt1060_evk
+    platform_allow: frdm_k64f mimxrt1060_evk mimxrt1064_evk