Add minimal compile support for fapi2::specialWakeup
Add minimal compile support for fapi2::specialWakeup

Put in empty implementation for platSpecialWakeup to allow HWPs
to compile.

Change-Id: I1c33c822f58f9692a47799cd3c602e7232170816
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/28909
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Corey V. Swenson <6b585c7446d4a0351ef146912eaabcae3d9a2e28@us.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot