Fix the following compilation error when compiling
with ARM BE compiler.
drivers/bus/dpaa/include/fsl_qman.h:1997:25:
error: statement with no effect [-Werror=unused-value]
#define hw_sg_to_cpu(x) (x)
Fixes: c47ff048b9 ("bus/dpaa: add QMAN driver core routines")
Cc: stable@dpdk.org
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>