qseecom: enable ce1 clock when setting PIPE key

When setting PIPE key, TZ need to read key store from ssd partition
again and re-authenticate it. Authenticating this requires accessing
crypto HW. Hence the CE clks needs to be enabled by qseecom prior to
issuing the request to set/clear pipe key.

Change-Id: I3472e62416c24563b429801fa0d218b0df5e7149
Signed-off-by: Zhen Kong <zkong@codeaurora.org>