of: restructure for_each macros to fix compile warnings
Commit 00b2c76a "include/linux/of.h: make for_each_child_of_node() reference its args when CONFIG_OF=n" fixed warnings for unused variables, but introduced variable "used uninitialized" warnings. Simply initializing the variables would result in "set but not used" warnings with W=1. Fix both types of warnings by making all the for_each macros unconditional and rely on the dummy static inline functions to initialize and reference any variables. Reported-by: NGeert Uytterhoeven <geert@linux-m68k.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: NRob Herring <robh@kernel.org> Acked-by: NGrant Likely <grant.likely@linaro.org>
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