firmware-utils: fix various compiler warnings

mostly implicit defines due to missing includes plus one const that
shouldn't be one.

Signed-off-by: Felix Kaechele <felix@kaechele.ca>

SVN-Revision: 47865

tools/firmware-utils/src/lzma2eva.c

@@ -48,7 +48,7 @@ main(int argc, char *argv[])
 
   const char *infile, *outfile;
   FILE *in, *out;
-  static const uint8_t buf[4096];
+  static uint8_t buf[4096];
   size_t elems;
 
   uint8_t properties;