shell: update shell_uart backend test condition

New shell does not need either CONFIG_UART_CONSOLE
or interrupts support to be working. Only CONFIG_SERIAL
in combination with CONFIG_UART_SHELL_ON_DEV_NAME are required.
Updated sample yaml file accordingly.

Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
diff --git a/samples/subsys/shell/shell_module/sample.yaml b/samples/subsys/shell/shell_module/sample.yaml
index 4db3c4b..d39a284 100644
--- a/samples/subsys/shell/shell_module/sample.yaml
+++ b/samples/subsys/shell/shell_module/sample.yaml
@@ -2,12 +2,12 @@
   name: Shell Sample
 tests:
   test:
-    filter: ( CONFIG_UART_CONSOLE and CONFIG_SERIAL_SUPPORT_INTERRUPT )
+    filter: ( CONFIG_SERIAL and CONFIG_UART_SHELL_ON_DEV_NAME )
     tags: shell
     harness: keyboard
     min_ram: 40
   test_minimal:
-    filter: ( CONFIG_UART_CONSOLE and CONFIG_SERIAL_SUPPORT_INTERRUPT )
+    filter: ( CONFIG_SERIAL and CONFIG_UART_SHELL_ON_DEV_NAME )
     tags: shell
     harness: keyboard
     extra_args: CONF_FILE="prj_minimal.conf"