rapidio: fix comment
rapidio: fix comment

The resource index for the mailboxes was incorrect.

Signed-off-by: Chad Reese <ca042d4c68799e787a2e6fc87ff45867505ceda7@caviumnetworks.com>
Acked-by: Alexandre Bounine <4ee99b187650e6ea4b9259bc798eb76cfca96ee4@idt.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas