validation: dma: fix data comparison with segmented packets

If for some reason, implementation reports longer packet segment length
that application requested, test ends up comparing uninitialized data.
Fix this by always comparing just the DMA transferred amount.

Signed-off-by: Tuomas Taipale <tuomas.taipale@nokia.com>

test/validation/api/dma/dma.c

@@ -1162,6 +1162,7 @@ static void test_dma_pkt_segs_to_addr_sync(void)
 		odp_packet_seg_t pkt_seg = odp_packet_first_seg(pkt);
 		uint8_t *src = odp_packet_data(pkt);
 		uint32_t seg_len = odp_packet_seg_len(pkt);
+		seg_len = MIN(len, seg_len);
 
 		src += OFFSET;
 		seg_len -= OFFSET;