README: Cleanup description of supported partitions.

README: Cleanup description of supported partitions.

Signed-off-by: Karl O. Pinc <kop@meme.com>

README

@@ -951,13 +951,20 @@ The following options need to be configured:
 		commands like bootm or iminfo. This option is
 		automatically enabled when you select CONFIG_CMD_DATE .
 
-- Partition Support:
-		CONFIG_MAC_PARTITION and/or CONFIG_DOS_PARTITION
-		and/or CONFIG_ISO_PARTITION and/or CONFIG_EFI_PARTITION
+- Partition Labels (disklabels) Supported:
+		Zero or more of the following:
+		CONFIG_MAC_PARTITION   Apple's MacOS partition table.
+		CONFIG_DOS_PARTITION   MS Dos partition table, traditional on the
+				       Intel architecture, USB sticks, etc.
+		CONFIG_ISO_PARTITION   ISO partition table, used on CDROM etc.
+		CONFIG_EFI_PARTITION   GPT partition table, common when EFI is the
+				       bootloader.  Note 2TB partition limit; see
+				       disk/part_efi.c
+		CONFIG_MTD_PARTITIONS  Memory Technology Device partition table.
 
 		If IDE or SCSI support is enabled (CONFIG_CMD_IDE or
 		CONFIG_CMD_SCSI) you must configure support for at
-		least one partition type as well.
+		least one non-MTD partition type as well.
 
 - IDE Reset method:
 		CONFIG_IDE_RESET_ROUTINE - this is defined in several