linux_compat: remove cpu_relax() define
The macro cpu_relax() is defined by several headers in different ways. arch/{arm,avr32,mips}/include/asm/processor.h defines it as follows: #define cpu_relax() barrier() On the other hand, include/linux/compat.h defines it as follows: #define cpu_relax() do {} while (0) If both headers are included from the same source file, the warning warning: "cpu_relax" redefined [enabled by default] is displayed. It effectively makes it impossible to include <linux/compat.h> from some sources. Drop the latter. Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: NHeiko Schocher <hs@denx.de> Acked-by: NSimon Glass <sjg@chromium.org> Reviewed-by: NLukasz Majewski <l.majewski@samsung.com>
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