VMCI: Fix the description of vmci_check_host_caps()

vmci_check_host_caps() doesn't return a bool but an int.
Fix the description accordingly.

Fixes: 782f2445 ("VMCI: fix error handling path when registering guest driver")
Acked-by: Vishnu Dasa <vdasa@vmware.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/c181bec88aab1145d3868d61b7e52d53923f8206.1645734041.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>