crypto/nx: Remove 'pid' in vas_tx_win_attr struct

When window is opened, pid reference is taken for user space
windows. Not needed for kernel windows. So remove 'pid' in
vas_tx_win_attr struct.
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1587114674.2275.1132.camel@hbabu-laptop

arch/powerpc/include/asm/vas.h

@@ -86,7 +86,6 @@ struct vas_tx_win_attr {
 	int wcreds_max;
 	int lpid;
 	int pidr;		/* hardware PID (from SPRN_PID) */
-	int pid;		/* linux process id */
 	int pswid;
 	int rsvd_txbuf_count;
 	int tc_mode;

drivers/crypto/nx/nx-common-powernv.c

@@ -692,7 +692,6 @@ static struct vas_window *nx_alloc_txwin(struct nx_coproc *coproc)
 	 */
 	vas_init_tx_win_attr(&txattr, coproc->ct);
 	txattr.lpid = 0;	/* lpid is 0 for kernel requests */
-	txattr.pid = 0;		/* pid is 0 for kernel requests */
 
 	/*
 	 * Open a VAS send window which is used to send request to NX.