net: tipc: remove redundant 'bool' from CONFIG_TIPC_{MEDIA_UDP,CRYPTO}

The 'bool' is already specified for these options.

The second 'bool' under the help message is redundant.

While I am here, I moved 'default y' above, as it is common to place
the help text last.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>