ARM: dts: qcom: Move IOMMU entries for HS-I2S device

Move the IOMMU entries from HS-I2S interface node to
HS-I2S generic node. Grouping all SIDs under a single
IOMMU entry saves the number of CBs used.

Change-Id: I7adbe957ac810383373f1fb2cb6cbcee8a9104c0
Signed-off-by: Jayadev K <jayak@codeaurora.org>