libpayload: Parse DDR Information using coreboot tables

BUG=b:182963902,b:177917361
TEST=Validated on qualcomm sc7280 development board

Signed-off-by: Ravi Kumar Bokka <rbokka@codeaurora.org>
Change-Id: Ieca7e9fc0e1a018fcb2e9315aebee088edac858e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59193
Reviewed-by: Shelley Chen <shchen@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

payloads/libpayload/include/sysinfo.h

@@ -83,6 +83,7 @@ struct sysinfo_t {
 	uintptr_t compiler;
 	uintptr_t linker;
 	uintptr_t assembler;
+	uintptr_t mem_chip_base;
 
 	uintptr_t cb_version;