msm: physical offset for MSM7X30

The MSM7x30 does not have a separate bank of memory for shared
memory communication with the radio CPU.  Set the kernel base
address 2MB in, to use this first 2MB for this purpose.

Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Gregory Bean <gbean@codeaurora.org>
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>