Add explicit dependencies for the various regmap modules, so Kconfig
will print a warning message when another module selects a regmap module
without fulfilling its dependencies.

Without this, it's much more difficult to find out which module did the
offending select.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NMark Brown <broonie@linaro.org>