[PATCH v2 1/3] CLK: get rid of HAVE_CLK_PREPARE

On Wed, Nov 21, 2012 at 09:34:40PM -0800, Dmitry Torokhov wrote:

HAVE_CLK_PREPARE is automatically selected by COMMON_CLK and the only
platform that explicitly selects HAVE_CLK_PREPARE is MXS which has been
switched to common clk framework, so we can delete this option now.

As part of this change we move declarations of clk_prepare() and
clk_unprepare() under HAVE_CLK and provide stubs if this option is not
enabled.

Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

NAK, until some proper investigation about whether this can be removed
has been done.