Trogdor: Change the flash size to 512KB
uses another EC SKU, which has 512KB flash instead.
BRANCH=None
TEST=Built the image and checked it bootable on rev-2.
#define CONFIG_I2C_DEBUG
/* Internal SPI flash on NPCX7 */
-#define CONFIG_FLASH_SIZE_BYTES (1024 * 1024) /* 1MB internal spi flash */
+#define CONFIG_FLASH_SIZE_BYTES (512 * 1024) /* 512KB internal spi flash */
/* Keyboard */
#define CONFIG_KEYBOARD_BOARD_CONFIG
