scripts: Print file causing error for syscalls

I was using a source file provided by TDK for a sensor driver
and the file was (originally) not encoded as UTF-8. When the read()
function was called, the build would fail but I had no idea why.

This change wrapps the 'read()' call and prints the error with
the file name as context.

Signed-off-by: Yuval Peress <peress@google.com>