[CVE-2010-3873] memory corruption in X.25 facilities parsing

[Andy Whitcroft]

CVE-2010-3873
	The X.25 implementation in the Linux kernel before 2.6.36.2 does
	not properly parse facilities, which allows remote attackers to
	cause a denial of service (heap memory corruption and panic)
	or possibly have unspecified other impact via malformed (1)
	X25_FAC_CALLING_AE or (2) X25_FAC_CALLED_AE data, related to
	net/x25/x25_facilities.c and net/x25/x25_in.c, a different
	vulnerability than CVE-2010-4164.

It seems that this fix was was applied correctly to all branches except
for maverick/ti-omap4.  Following this email is a direct cherry-pick
from mainline containing the same fix as already applied elsewhere.

Proposing for maverick/ti-omap4.

-apw