dma_addr_t may be 64 bit wide, which causes a build failure
when doing a division on it. Here it is safe to cast to an
u32 type, which avoids the problem.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NXia Kaixu <kaixu.xia@linaro.org>
Tested-by: NTushar Behera <tushar.behera@linaro.org>
Signed-off-by: NMark Brown <broonie@linaro.org>