Convert CONFIG_SYS_I2C_EEPROM_ADDR et al to Kconfig

- Rename usages of CONFIG_SYS_DEF_EEPROM_ADDR to CONFIG_SYS_I2C_EEPROM_ADDR
  based on current usage.
- Convert CONFIG_SYS_I2C_EEPROM_ADDR, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
  CONFIG_SYS_I2C_EEPROM_BUS, CONFIG_CONFIG_SYS_EEPROM_SIZE
  CONFIG_SYS_EEPROM_PAGE_WRITE_BITS and CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
  to Kconfig.  We move these symbols around a bit and add appropriate
  dependencies to them.  In some cases, we now add a correct default value
  as well.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/cm_fx6_defconfig b/configs/cm_fx6_defconfig
index de7870b..cb37ba1 100644
--- a/configs/cm_fx6_defconfig
+++ b/configs/cm_fx6_defconfig
@@ -38,6 +38,9 @@
 CONFIG_CMD_EEPROM=y
 CONFIG_CMD_EEPROM_LAYOUT=y
 CONFIG_EEPROM_LAYOUT_HELP_STRING="v2, v3"
+CONFIG_SYS_I2C_EEPROM_BUS=2
+CONFIG_SYS_EEPROM_PAGE_WRITE_BITS=4
+CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS=5
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
@@ -63,6 +66,7 @@
 CONFIG_BOUNCE_BUFFER=y
 CONFIG_DWC_AHSATA=y
 # CONFIG_DWC_AHSATA_AHCI is not set
+CONFIG_SYS_I2C_EEPROM_ADDR=0x50
 CONFIG_FSL_USDHC=y
 CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y