lib/spd_bin: Use proper I2C addresses

Use the plain address instead of the weird shifted encoding (e.g. if
we'd use `0xa0` as address, it's actually `0x50` encoded into a write
command).

Change-Id: I6febb2e04e1c6de4294dfa37bde16b147a80b7a8
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20405
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/include/spd_bin.h

@@ -43,7 +43,7 @@
 #define LPDDR4_SPD_PART_LEN	20
 
 struct spd_block {
-	u8 addr_map[CONFIG_DIMM_MAX];
+	u8 addr_map[CONFIG_DIMM_MAX]; /* 7 bit I2C addresses */
 	u8 *spd_array[CONFIG_DIMM_MAX];
 	/* Length of each dimm */
 	u16 len;