[SCSI] ibmvscsi: fix a typo in a source code comment

 * (CRQ), which is just a buffer of 16 byte entries in the receiver's 

 * (CRQ), which is just a buffer of 16 byte entries in the receiver's 

 * Senders cannot access the buffer directly, but send messages by

 * Senders cannot access the buffer directly, but send messages by

 * making a hypervisor call and passing in the 16 bytes.  The hypervisor

 * making a hypervisor call and passing in the 16 bytes.  The hypervisor

 * puts the message in the next 16 byte space in round-robbin fashion,

 * puts the message in the next 16 byte space in round-robin fashion,

 * turns on the high order bit of the message (the valid bit), and 

 * turns on the high order bit of the message (the valid bit), and 

 * generates an interrupt to the receiver (if interrupts are turned on.) 

 * generates an interrupt to the receiver (if interrupts are turned on.) 

 * The receiver just turns off the valid bit when they have copied out

 * The receiver just turns off the valid bit when they have copied out