update mtd-utils to 1.5.2

 - update mtd-utils to 1.5.2 (git a494d30ab1ae40cb7665680cadf5af3ca3830a73)
 - remove patches that went upstream
 - fixes build from scratch as of broken patches

Signed-off-by: Sven Roederer <devel-sven@geroedel.de>
[use the final version of 1.5.2 instead, fix header of jffs2_lzma_(de,)compress()]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 47790