ARM: clps711x/p720t: Replace __initcall by .init_early call

Since we are trying to do to support multiple machines in a single kernel,
we need to eliminate the use of __initcall to be used for all machines.
Using .init_early call solves this problem.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>