bus/fslmc: check for DMA map in primary process only
bus/fslmc: check for DMA map in primary process only

DMA mapping is a property of primary process - SMMU population done
once by primary doesn't need to be populated again in secondary

Signed-off-by: Shreyansh Jain <9744844f062a9f6cf95f66f06508da54c8fc7929@nxp.com>
Reviewed-by: Sachin Saxena <22665d18b083d287876f507c3d0f65800f1404e7@nxp.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk