cpufreq: s3c24xx: split out registers

Each of the cpufreq drivers uses a fixed set of register
bits, copy those definitions into the drivers to avoid
including mach/regs-clock.h.

[krzk: Fix build by copying also S3C2410_LOCKTIME]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20200806182059.2431-34-krzk@kernel.org


Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>