qcacld-3.0: Check if auth_tag_len exceeds sizeof(hash)

Without this check, memcmp() compile-time check fails

Change-Id: I9e51d13381a0c4ecba0a31965100423aa165897f
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: Danny Lin <danny@kdrag0n.dev>
Signed-off-by: Yaroslav Furman <yaro330@gmail.com>
Signed-off-by: Forenche <prahul2003@gmail.com>
Signed-off-by: improbir <ghosh_probir@yahoo.com>