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/netspace_v2_defconfig b/configs/netspace_v2_defconfig
index 673e0a4..1bb9915 100644
--- a/configs/netspace_v2_defconfig
+++ b/configs/netspace_v2_defconfig
@@ -55,6 +55,8 @@
 CONFIG_DM=y
 CONFIG_SATA_MV=y
 CONFIG_SYS_SATA_MAX_DEVICE=1
+CONFIG_LBA48=y
+CONFIG_SYS_64BIT_LBA=y
 CONFIG_KIRKWOOD_GPIO=y
 CONFIG_SYS_I2C_LEGACY=y
 CONFIG_SYS_I2C_MVTWSI=y