ARM: clps711x: Remove the special name for the syscon driver

This is a partial revert of the patch:
"6597619f ARM: clps711x: Add support for SYSCON driver".
No reason to make SYSCON driver name unique to that processor.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>