[kernel] crypto: add missing depends for crypto-manager

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37817 3c298f89-4303-0410-b956-a3cf2f4a3e73
include: introduce subtarget_platform CONFIG_TARGET

Sometimes it is useful to change platform's kernel config file but with loaded
subtarget's kernel config. Good example for this use case is malta.

Example:

$ make kernel_menuconfig CONFIG_TARGET=subtarget_platform

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37818 3c298f89-4303-0410-b956-a3cf2f4a3e73
malta: refresh configuration

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37819 3c298f89-4303-0410-b956-a3cf2f4a3e73