bash: add missing patch for CVE-2014-6271 to 4.2 recipe

The bash_4.2 recipe was missed when the fix was backported to the dora
branch.

Patch based on the one from OE-Core master rev
798d833c9d4bd9ab287fa86b85b4d5f128170ed3 by Ross Burton
<ross.burton@intel.com>, with the content replaced from the
appropriate upstream patch.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
bash: add missing patch for CVE-2014-7169 to 4.2 recipe

The bash_4.2 recipe was missed when the fix was backported to the dora
branch.

Patch from OE-Core master rev: 76a2d6b83472995edbe967aed80f0fcbb784b3fc
by Khem Raj <raj.khem@gmail.com>

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>