Integrate seco-sharedconf/fix-xxd-offsetproblem-when-reading-from-fuses

Commit: seco-ne/tools/seco-sharedconf@147b099c

functions: get_from_fuse: Fix problem with busybox xxd

With busybox xxd the -s parameter for offset does not work correctly. There already had been a workaround for this, but it didn't applied due to another syntax-error when calculating the offset. Now 'dd' is always used for reading at the correct offset, and xxd only converts the data.