lib/spd_bin: Extend DDR4 spd information

From DDR4 SPD spec:

Byte 4 (0x004): SDRAM Density and Banks
Bits [7, 6]:
00 = 0 (no bank groups)
01 = 1 (2 bank groups)
10 = 2 (4 bank groups)
11 = reserved

Bit [5, 4] :
00 = 2 (4 banks)
01 = 3 (8 banks)
All others reserved

Separate DDR3 and DDR4 banks. And extened capmb, rows, cols and ranks.
Separate DDR3 and DDR4 ORGANIZATION/BUS_DEV_WIDTH offset.

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I5f56975ce73d8ed2d4de7d9fd08e5ae86993e731
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35206
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/include/spd_bin.h

@@ -31,8 +31,10 @@
 #define  SPD_DRAM_DDR4		0x0C
 #define SPD_DENSITY_BANKS	4
 #define SPD_ADDRESSING		5
-#define SPD_ORGANIZATION	7
-#define SPD_BUS_DEV_WIDTH	8
+#define DDR3_ORGANIZATION	7
+#define DDR3_BUS_DEV_WIDTH	8
+#define DDR4_ORGANIZATION	12
+#define DDR4_BUS_DEV_WIDTH	13
 #define DDR3_SPD_PART_OFF	128
 #define DDR3_SPD_PART_LEN	18
 #define LPDDR3_SPD_PART_OFF	128