env: Rename getenv/_f() to env_get()
We are now using an env_ prefix for environment functions. Rename these two functions for consistency. Also add function comments in common.h. Quite a few places use getenv() in a condition context, provoking a warning from checkpatch. These are fixed up in this patch also. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
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@@ -81,7 +81,7 @@ static const char *__hwconfig(const char *opt, size_t *arglen,
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"and before environment is ready\n");
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return NULL;
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}
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env_hwconfig = getenv("hwconfig");
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env_hwconfig = env_get("hwconfig");
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}
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if (env_hwconfig) {
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