char: misc: increase DYNAMIC_MINORS value

DYNAMIC_MINORS value has been set to 64.
Due to this reason, we are facing a module loading fail problem of
device driver like below.

 [   45.712771] pdic_misc_init - return error : -16

We need to increase this value for registering more misc devices.

Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com>
Link: https://lore.kernel.org/r/20201029062855.19757-1-sangmoon.kim@samsung.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>