ARM: dts: msm: update IPA node for sdx-hedgehog

Update IPA node for sdx-hedgehog. sdx-hedgehog inherits the DTS definitions
from mdmcalifornium. Since IPA HW is different between the two targets,
this change updates the IPA node.

Change-Id: I03600742a1b02e9ebfa8394a2772e1e96801d6bd
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>