dmadev: fix debug build with tracepoints

Missing definition of errnos causes build failure:

In file included from ../lib/dmadev/rte_dmadev_trace.h:16,
                 from ../lib/dmadev/rte_dmadev_trace_points.c:8:
../lib/dmadev/rte_dmadev.h: In function ‘rte_dma_copy’:
../lib/dmadev/rte_dmadev.h:1183:25: error: ‘EINVAL’ undeclared
	(first use in this function)
 1183 |                 return -EINVAL;
      |                         ^~~~~~

Bugzilla ID: 1814
Fixes: 91e581e ("dmadev: add data plane API")
Cc: [email protected]

Signed-off-by: Stephen Hemminger <[email protected]>
Acked-by: Chengwen Feng <[email protected]>

Author: shemminger

lib/dmadev/rte_dmadev.h

@@ -145,6 +145,7 @@
  */
 
 #include <stdint.h>
+#include <errno.h>
 
 #include <rte_bitops.h>
 #include <rte_common.h>