libpayload: Cache physical cbmem console address

Same as with other consoles and drivers that cache an address
outside the payload (e.g. video/corebootfb), we should store the
physical address, so we can derive the virtual address on demand.
This makes it save to use the address across relocations.

As a first step in migrating `libsysinfo` to `uintptr_t`, we
also switch to the physical address there.

Fixes the default build of FILO, tested with Qemu/i440FX and Qemu/Q35.

Change-Id: I4b8434af69e0526f78523ae61981a15abb1295b0
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37478
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

payloads/libpayload/include/sysinfo.h

@@ -29,6 +29,8 @@
 #ifndef _SYSINFO_H
 #define _SYSINFO_H
 
+#include <stdint.h>
+
 /* Maximum number of memory range definitions. */
 #define SYSINFO_MAX_MEM_RANGES 32
 /* Allow a maximum of 8 GPIOs */
@@ -101,7 +103,7 @@ struct sysinfo_t {
 #endif
 
 	void		*tstamp_table;
-	void		*cbmem_cons;
+	uintptr_t cbmem_cons;
 	void		*mrc_cache;
 	void		*acpi_gnvs;