Can Qualcomm MSM8960 apps processor control GSBI11 and GSBI12?

Yes, 8960 apps processor can control GSBI11 and GSBI12.
The 12 GSBIs are shared resource and can be directly accessed by all processors.

GSBI11 is SPS GSBI1 and the controller address base is 0x12440000.
GSBI12 is SPS GSBI2 and the controller address base is 0x12480000.