Fix ChaCha assembly code on 32-bit HPUX itanium systems

This fixes the reported crashes 32-bit HPUX systems due to
raw out and inp pointer values, and adds one nop instruction
on 64-bit systems, like it is done in other assembly modules
for those systems.

The fix was tested by @johnkohl-hcl see:
#17067 (comment)

Fixes #17067

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from #21681)

(cherry picked from commit 6d38cce)

crypto/chacha/asm/chacha-ia64.pl

@@ -46,6 +46,8 @@
 	ADDP		@k[11]=4,$key
 	.save		ar.lc,r3
 	mov		r3=ar.lc		}
+{ .mmi;	ADDP		$out=0,$out
+	ADDP		$inp=0,$inp		}
 { .mmi;	ADDP		$key=0,$key
 	ADDP		$counter=0,$counter
 	.save		pr,r14