Convert CONFIG_LBA48 et al to Kconfig

This converts the following to Kconfig:
   CONFIG_LBA48
   CONFIG_SYS_64BIT_LBA

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/Bananapro_defconfig b/configs/Bananapro_defconfig
index 19b6446..36f9bf8 100644
--- a/configs/Bananapro_defconfig
+++ b/configs/Bananapro_defconfig
@@ -16,6 +16,7 @@
 CONFIG_SYS_PBSIZE=1024
 CONFIG_NETCONSOLE=y
 CONFIG_SCSI_AHCI=y
+CONFIG_SYS_64BIT_LBA=y
 CONFIG_SYS_I2C_MVTWSI=y
 CONFIG_SYS_I2C_SLAVE=0x7f
 CONFIG_SYS_I2C_SPEED=400000