environment: constify arguments
The directory arguments to envfs_load and envfs_save can
be const.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 0de5aae commit c2428b2287a8377fd277c429be993a4b9babdf7e
@Sascha Hauer Sascha Hauer authored on 20 Feb 2014
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common/environment.c
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include/envfs.h