[MTD] Remove dead maps

The tqm834x map Kconfig options depends on TQM834x which does not
exist anywhere else in the kernel.

The pq2fads map Kconfig/makefile support was removed a while ago but
the actual file persisted.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --cc drivers/mtd/maps/Kconfig
Simple merge

diff --cc drivers/mtd/maps/Makefile
Simple merge

diff --cc drivers/mtd/maps/pq2fads.c
Simple merge

diff --cc drivers/mtd/maps/tqm834x.c
Simple merge