coresight: tpdm: Don't disable clk and regulator when enabled

In tpdm_enable function, the Clks and Regs were disabled when tpdm still
in enabled status. This will cause tpdm hw in unknown status.

Change-Id: I5bf26cd01ef2cbaa8c9f32af9604f65f925bb092
Signed-off-by: Mulu He <muluhe@codeaurora.org>