sparc64: Fix hibernation code refrence to PAGE_OFFSET.

We changed PAGE_OFFSET to be a variable rather than a constant,
but this reference here in the hibernate assembler got missed.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc/power/hibernate_asm.S

@@ -54,8 +54,8 @@ ENTRY(swsusp_arch_resume)
 	 nop
 
 	/* Write PAGE_OFFSET to %g7 */
-	sethi	%uhi(PAGE_OFFSET), %g7
-	sllx	%g7, 32, %g7
+	sethi	%hi(PAGE_OFFSET), %g7
+	ldx	[%g7 + %lo(PAGE_OFFSET)], %g7
 
 	setuw	(PAGE_SIZE-8), %g3