bsps/atsam: Fix type of options (part 2)

The patch "bsps/atsam: Fix type of options" missed to adapt some parts
of the yml. With that a custom value works well. But if no value is set,
configure doesn't fall back to the default value but instead just causes
an error. This patch fixes that.

spec/build/bsps/arm/atsam/optconidx.yml

@@ -1,7 +1,7 @@
 SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
 actions:
 - get-integer: null
-- define-condition: null
+- define: null
 build-type: option
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
@@ -10,6 +10,7 @@ default-by-variant: []
 description: |
   device index for /dev/console (default 1, e.g. USART1)
 enabled-by: true
+format: '{}'
 links: []
 name: ATSAM_CONSOLE_DEVICE_INDEX
 type: build

spec/build/bsps/arm/atsam/optcontype.yml

@@ -1,7 +1,7 @@
 SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
 actions:
 - get-integer: null
-- define-condition: null
+- define: null
 build-type: option
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
@@ -10,6 +10,7 @@ default-by-variant: []
 description: |
   device type for /dev/console, use 0 for USART and 1 for UART (default USART)
 enabled-by: true
+format: '{}'
 links: []
 name: ATSAM_CONSOLE_DEVICE_TYPE
 type: build