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/octeontx_83xx_defconfig b/configs/octeontx_83xx_defconfig
index fbdf1cb..371f618 100644
--- a/configs/octeontx_83xx_defconfig
+++ b/configs/octeontx_83xx_defconfig
@@ -79,6 +79,8 @@
 CONFIG_TFTP_TSIZE=y
 CONFIG_SCSI_AHCI=y
 CONFIG_AHCI_PCI=y
+CONFIG_LBA48=y
+CONFIG_SYS_64BIT_LBA=y
 CONFIG_DM_I2C=y
 CONFIG_MISC=y
 CONFIG_SUPPORT_EMMC_RPMB=y