Merge tag 'nand/fixes-for-4.12-rc3' of git://git.infradead.org/linux-mtd into MTD

From Boris:
"""
This pull request contains several fixes to the core and the tango
driver.

tango fixes:
 * Add missing MODULE_DEVICE_TABLE() in tango_nand.c
 * Update the number of corrected bitflips

core fixes:
 * Fix a long standing memory leak in nand_scan_tail()
 * Fix several bugs introduced by the per-vendor init/detection
   infrastructure (introduced in 4.12)
 * Add a static specifier to nand_ooblayout_lp_hamming_ops definition
"""