cpu/qemu-x86: Fix timestamp and bist reporting

Change-Id: Id66a7f6767735862e138c58c4bcc9e68215dd3c5
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43002
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/cpu/qemu-x86/cache_as_ram_bootblock.S

@@ -29,11 +29,12 @@ cache_as_ram:
 
 	/* Restore the BIST result and timestamps. */
 #if defined(__x86_64__)
-	movd	%mm1, %rdi
+	movd	%mm2, %rdi
 	shld	%rdi, 32
 	movd	%mm1, %rsi
 	or	%rsi, %rdi
-	movd	%mm2, %rsi
+
+	movd	%mm0, %rsi
 #else
 	sub	$4, %esp