Kconfig: Remove BOARD_ID_MANUAL option

The BOARD_ID_MANUAL and BOARD_ID_STRING options were introduced for the
Urara board which is now long dead, and have never been used anywhere
else. They were trying to do something that we usually handle with a
separate SKU ID these days, whereas BOARD_ID is supposed to be reserved
for different revisions of the same board/SKU. Get rid of it to make
further refactoring of other options easier.

Also shove some stuff back into the Urara mainboard that should've never
crept into generic headers.

Change-Id: I4e7018066eadb38bced96d8eca2ffd4f0dd17110
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/22694
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/urara/Kconfig

@@ -24,7 +24,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select CPU_IMGTEC_PISTACHIO
 	select COMMON_CBFS_SPI_WRAPPER
 	select SPI_FLASH
-	select BOARD_ID_MANUAL
 
 config MAINBOARD_DIR
 	string

src/mainboard/google/urara/bootblock.c

@@ -20,6 +20,8 @@
 #include <assert.h>
 #include <boardid.h>
 
+#include "urara_boardid.h"
+
 #define PADS_FUNCTION_SELECT0_ADDR	(0xB8101C00 + 0xC0)
 
 #define GPIO_BIT_EN_ADDR(bank)		(0xB8101C00 + 0x200 + (0x24 * (bank)))

src/mainboard/google/urara/urara_boardid.h

@@ -27,4 +27,10 @@
 #define URARA_BOARD_ID_KENNET	4
 #define URARA_BOARD_ID_SPACE	5
 
+struct board_hw {
+	uint8_t i2c_interface;
+};
+
+const struct board_hw *board_get_hw(void);
+
 #endif