powerpc/xmon: fix dump_segments()

[ Upstream commit 32c8c4c621897199e690760c2d57054f8b84b6e6 ]

mfsrin() takes segment num from bits 31-28 (IBM bits 0-3).
Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr>
[mpe: Clarify bit numbering]
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: NSasha Levin <sashal@kernel.org>

arch/powerpc/xmon/xmon.c

@@ -3493,7 +3493,7 @@ void dump_segments(void)
 
 	printf("sr0-15 =");
 	for (i = 0; i < 16; ++i)
-		printf(" %x", mfsrin(i));
+		printf(" %x", mfsrin(i << 28));
 	printf("\n");
 }
 #endif