mainboard/Kconfig: add 24MB ROM size

16MB + 8MB flashes are used on some boards, such as Lenovo M920

Change-Id: Iac6e076ed17d7e944cc829ff0cb27ede50c6f7db
Signed-off-by: Maciej Pijanowski <maciej.pijanowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80072
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Kopeć <michal.kopec@3mdeb.com>
diff --git a/src/mainboard/Kconfig b/src/mainboard/Kconfig
index aec996a..ec4ae8f 100644
--- a/src/mainboard/Kconfig
+++ b/src/mainboard/Kconfig
@@ -44,6 +44,8 @@
 	bool
 config BOARD_ROMSIZE_KB_16384
 	bool
+config BOARD_ROMSIZE_KB_24576
+	bool
 config BOARD_ROMSIZE_KB_32768
 	bool
 config BOARD_ROMSIZE_KB_65536
@@ -63,6 +65,7 @@
 	default COREBOOT_ROMSIZE_KB_10240 if BOARD_ROMSIZE_KB_10240
 	default COREBOOT_ROMSIZE_KB_12288 if BOARD_ROMSIZE_KB_12288
 	default COREBOOT_ROMSIZE_KB_16384 if BOARD_ROMSIZE_KB_16384
+	default COREBOOT_ROMSIZE_KB_24576 if BOARD_ROMSIZE_KB_24576
 	default COREBOOT_ROMSIZE_KB_32768 if BOARD_ROMSIZE_KB_32768
 	default COREBOOT_ROMSIZE_KB_65536 if BOARD_ROMSIZE_KB_65536
 	help
@@ -126,6 +129,11 @@
 	help
 	  Choose this option if you have a 16384 KB (16 MB) ROM chip.
 
+config COREBOOT_ROMSIZE_KB_24576
+	bool "24576 KB (24 MB)"
+	help
+	  Choose this option if you have a 24576 KB (24 MB) ROM chip.
+
 config COREBOOT_ROMSIZE_KB_32768
 	bool "32768 KB (32 MB)"
 	help
@@ -152,6 +160,7 @@
 	default 10240 if COREBOOT_ROMSIZE_KB_10240
 	default 12288 if COREBOOT_ROMSIZE_KB_12288
 	default 16384 if COREBOOT_ROMSIZE_KB_16384
+	default 24576 if COREBOOT_ROMSIZE_KB_24576
 	default 32768 if COREBOOT_ROMSIZE_KB_32768
 	default 65536 if COREBOOT_ROMSIZE_KB_65536
 
@@ -169,6 +178,7 @@
 	default 0x00a00000 if COREBOOT_ROMSIZE_KB_10240
 	default 0x00c00000 if COREBOOT_ROMSIZE_KB_12288
 	default 0x01000000 if COREBOOT_ROMSIZE_KB_16384
+	default 0x01800000 if COREBOOT_ROMSIZE_KB_24576
 	default 0x02000000 if COREBOOT_ROMSIZE_KB_32768
 	default 0x04000000 if COREBOOT_ROMSIZE_KB_65536