mgmt/mcumgr: Fix CONFIG_MGMT_VERBOSE_ERR_RESPONSE
mgmt/mcumgr: Fix CONFIG_MGMT_VERBOSE_ERR_RESPONSE

The options should enable verbose responses in error responses
to SMP command processing, but has been broen when the code
has been ported to zcbor.

Signed-off-by: Dominik Ermel <1a1d45a9cc0c98a37f8d0a0d2dbe3cacc0b2344f@nordicsemi.no>

galak/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr