samples: openamp_rsc_table: use vendor-specific rsc table to reply to host

Update for both 8QM and 8QXP, the nxp_openamp_imx8-adsp board
configuration to enable vendor-specific resource table features
instead of FW_READY reply config.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>