msm: ecm_ipa: add support for 64 bit

Moving API header file out of mach folder. Applying needed fixes for
64 bit enablement.

Change-Id: Iae1354e04b53ac468e1359dd6e4cd891e636405b
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>