drivers: llcc: Do not do cacheable mode settings for v1

For LLCC hardware version 1, cache override registers are
expected to be static one time configured by firmware and
HLOS might not even have access to these override registers.
So, remove the configuration from LLCC driver.

Change-Id: I39468de00d54ba7fc82f8cfcdaae9e98c7bd30ac
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>