samples: drivers: uart: async_api: exclude some platforms with LPUART

NXP platforms with the LPUART require DMA for the async feature.
Exclude platforms without DMA.  Also exclude platforms with DCACHE
since this sample does not place the UART buffers in non-cacheable
memory.

Signed-off-by: Derek Snell <derek.snell@nxp.com>

samples/drivers/uart/async_api/sample.yaml

@@ -9,5 +9,17 @@ tests:
       - uart
     filter: CONFIG_SERIAL and
             CONFIG_UART_ASYNC_API and
-            dt_chosen_enabled("zephyr,shell-uart")
+            dt_chosen_enabled("zephyr,shell-uart") and
+            not CONFIG_UART_MCUX_LPUART
+    harness: keyboard
+  sample.drivers.uart.async_api.lpuart:
+    tags:
+      - serial
+      - uart
+    filter: CONFIG_SERIAL and
+            CONFIG_UART_ASYNC_API and
+            dt_chosen_enabled("zephyr,shell-uart") and
+            CONFIG_UART_MCUX_LPUART and
+            not CONFIG_CPU_HAS_DCACHE
+    depends_on: dma
     harness: keyboard