libpayload: Cache physical CMOS option table location

In the presence of self-relocating payloads, it's safer to keep
physical addresses in `libsysinfo`.

Change-Id: I64a37bef263022edb504086c02a3fd22ce068ba4
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43576
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>

payloads/libpayload/include/sysinfo.h

@@ -63,7 +63,7 @@ struct sysinfo_t {
 		unsigned int type;
 	} memrange[SYSINFO_MAX_MEM_RANGES];
 
-	struct cb_cmos_option_table *option_table;
+	uintptr_t cmos_option_table;
 	u32 cmos_range_start;
 	u32 cmos_range_end;
 	u32 cmos_checksum_location;