msm: ipa: increase modem SW SRAM partition for IPA2.1 and IPA2.6L

Increase the modem partition in the SW SRAM to support the
Android tethering statistics feature in MSMs (8994 and 8952/8976).

CRs-Fixed: 815192
Change-Id: I33f0e7ed095f2f66d2d1cf0d696bfe8b742bff08
Acked-by: David Arinzon <darinzon@qti.qualcomm.com>
Signed-off-by: Sivan Reinstein <sivanr@codeaurora.org>