Add the two new functions to the 'blockdev' docs section
Add the two new functions to the 'blockdev' docs section

vpodzime/libblockdev,rhinstaller/libblockdev,rhinstaller/libblockdev,atodorov/libblockdev,atodorov/libblockdev,vpodzime/libblockdev,vpodzime/libblockdev,rhinstaller/libblockdev,atodorov/libblockdev