lib/oe/qa: ELFFile: check that a path is a file before opening it
When opening an ELF file check that a filename points to a normal file before
attempting to open it, as if the file turns out to be something more exotic like
a FIFO it could hang forever.
(From OE-Core rev: 4b3576bc30d8f8cdcde25189def8b059fc92b27c)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>