msm: acpuclock-8930: Move 8930 support to use acpuclock-krait

The acpuclock-krait library is an evolution of acpuclock-8960 with
several improvements. By dropping support for older versions of the
Krait processors and taking advantages of features only available on
newer Kraits, acpuclock-krait is both simpler and more efficient than
its predecessor. Key advantages in moving Krait targets to the newer
driver include:

 - The ability to write to one CPU's CP15 registers from another CPU.
   This means it's possible to change a CPU's clock sources after
   power-collapsing it, rather than needing to select a low-power
   source while it's still up (which slowed down the hotplug path).
   It also means acpuclk_set_rate() can be called from any CPU.

 - Dropping of obsolete Krait v1 processor errata workarounds.

 - Relocation of SoC-specific data into its own files

 - Shorter, more readable code

Change-Id: I90bbb41a47cc7c328b1c669d4001c7df76903f7b
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>