Update the EMEV2 SMP code to access the SMU directly
instead of relying on help from the legacy clock code.

This change moves us one step closer to common clocks.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>