kernel: modules: fix kmod-regmap

kernel: modules: fix kmod-regmap

This patch fixes the a compile issue that was triggered by
apm821xx/sata when kmod-regmap was selected.

The CONFIG_REGMAP is declared in drivers/base/regmap/Kconfig
as type "bool" and not "tristate". Hence the symbol should
never be set to module, as this confuses the #if CONFIG_REGMAP
guards in include/linux/regmap.h:

|.../drivers/regulator/core.c:4041: undefined reference to `dev_get_regmap'
|.../drivers/regulator/core.c:4042: undefined reference to `dev_get_regmap'
|.../drivers/regulator/core.c:4044: undefined reference to `dev_get_regmap'
|.../drivers/regulator/helpers.o: In function `regulator_is_enabled_regmap':
|.../drivers/regulator/helpers.c:36: undefined reference to `regmap_read'
|...

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>