bus/dpaa: fix 64-bit arch detection

[ upstream commit a4ab65e ]

There is no standard saying that __WORDSIZE should be defined or in
what include it should be defined. Use RTE_ARCH_64 instead.

This solves a warning when building with musl libc:

 warning: "__WORDSIZE" is not defined, evaluates to 0 [-Wundef]

Fixes: 847ee3b ("bus/dpaa: support FMAN frame queue lookup")

Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: David Marchand <david.marchand@redhat.com>

drivers/bus/dpaa/include/fsl_qman.h

@@ -16,7 +16,7 @@ extern "C" {
 #include <rte_eventdev.h>
 
 /* FQ lookups (turn this on for 64bit user-space) */
-#if (__WORDSIZE == 64)
+#ifdef RTE_ARCH_64
 #define CONFIG_FSL_QMAN_FQ_LOOKUP
 /* if FQ lookups are supported, this controls the number of initialised,
  * s/w-consumed FQs that can be supported at any one time.