QuarkPlatformPkg/PlatformHelperLib: Move PCAL functions for PEI use

QuarkPlatformPkg/PlatformHelperLib: Move PCAL functions for PEI use

The functions used to manage the PCAL GPIO I2C expander are located
in a DXE specific source file.  Move these functions to a source
file that is common to both the PEI and DXE versions of this library
so these GPIO pins can be managed from PEIMs.

Cc: Kelly Steele <kelly.steele@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Kelly Steele <kelly.steele@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19619 6f19259b-4bc3-4df7-8a09-765794883524