ASoC: uniphier: remove superfluous <linux/mfd/syscon.h> inclusion

None of aio-compress.c depends on the syscon header.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/uniphier/aio-compress.c

@@ -22,7 +22,6 @@
 #include <linux/dma-mapping.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
-#include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <sound/core.h>
 #include <sound/pcm.h>