ath5k: fix OOB in ath5keepromreadpcalinfo_5111
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.34 by commit be2f81024e7981565d90a4c9ca3067d11b6bca7f. For more details please see the references link.