boards:arm:Add adc support for csk6011a_nano and csk6012_nano

Signed-off-by: 徐宪辉 <xhxu@listenai.com>
2 job 于feat/add_feature_in_boards_yaml in 9 minute 和 33 second (queued for 1 second)
状态 作业 ID 名称 覆盖率
  Ztest
已通过 #41283
zgsz-02 generic
ztest_build_only

00:05:11

已通过 #41284
zgsz-03 with-device
ztest_device_test

00:05:07