dmadev: add missing header include

[ upstream commit e904fd7 ]

When checking C++ compatibility of SDK headers,
an error is detected by the compiler:

lib/dmadev/rte_dmadev_pmd.h:95:23: error:
‘RTE_DEV_NAME_MAX_LEN’ undeclared here (not in a function)

The header file rte_dev.h must be included.

Fixes: b36970f ("dmadev: introduce DMA device library")

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Conor Walsh <conor.walsh@intel.com>

lib/dmadev/rte_dmadev_pmd.h

@@ -14,6 +14,8 @@
  * by any application.
  */
 
+#include <rte_dev.h>
+
 #include "rte_dmadev.h"
 
 #ifdef __cplusplus