package/mtd: bump to version 2.1.0

Patch is removed because it is included in the release.

>From the release notes:
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Changes from 2.0.2 to 2.1.0:

Features:
 - mkfs.ubifs: Implement support for file system encryption
 - mkfs.ubifs: Implement selinux labelling support
 - ubinize: add support for skipping CRC check of a static volume when opening
 - ubimkvol: add support for skipping CRC check of a static volume when opening
 - Add lsmtd program

Fixes:
 - update various kernel headers
 - Instead of doing preprocessor magic, just output off_t as long long
 - fix verification percent display in flashcp
 - mkfs.ubifs: fix double free
 - mkfs.ubifs: Fix xattr nlink value
 - ubinize: avoid to create two UBI_LAYOUT_VOLUME_ID volume
 - common.h: fix prompt function
 - libmtd: don't print an error message for devices without ecc support
 - io_paral: Fix error handling of update_volume()
 - ubimkvol: Initialize req to zero to make sure no flags are set by default
 - libubi: add volume flags to ubi_mkvol_request
 - mkfs.ubifs: add_xattr is not depending on host XATTR support
 - Revert "Return correct error number in ubi_get_vol_info1" which
   introduced a regression.
 - make sure pkg-config is installed in configure script
 - ubiformat: process command line arguments before handling file arguments

Cleanup:
 - ubiformat: remove no-volume-table option
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Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>