Not sure why these were missing but they are very much needed to
compile the ubi code.
Fixes:
| drivers/mtd/ubi/attach.c:808:2: warning: parameter names (without types) in function declaration
| long long uninitialized_var(ec);
| ^~~~
| drivers/mtd/ubi/attach.c:847:3: error: 'ec' undeclared (first use in this function)
| ec = UBI_UNKNOWN;
| ^~
Upstream barebox has removed the compiler-gcc3/4 header files for
a unified header but I do not want to risk breaking gcc4 support
for the unknown gcc5 work right now.