s390: make __load_psw_mask work with clang

clang fails to use the %O and %R inline assembly modifiers
the same way as gcc, leading to build failures with every use
of __load_psw_mask():

/tmp/nmi-4a9f80.s: Assembler messages:
/tmp/nmi-4a9f80.s:571: Error: junk at end of line: `+8(160(%r11))'
/tmp/nmi-4a9f80.s:626: Error: junk at end of line: `+8(160(%r11))'

Replace these with a more conventional way of passing the addresses
that should work with both clang and gcc.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/processor.h

@@ -339,10 +339,10 @@ static __no_kasan_or_inline void __load_psw_mask(unsigned long mask)
 
 	asm volatile(
 		"	larl	%0,1f\n"
-		"	stg	%0,%O1+8(%R1)\n"
-		"	lpswe	%1\n"
+		"	stg	%0,%1\n"
+		"	lpswe	%2\n"
 		"1:"
-		: "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc");
+		: "=&d" (addr), "=Q" (psw.addr) : "Q" (psw) : "memory", "cc");
 }
 
 /*