i2c-qcom-geni: Add support for Multi EE usecase in I2C

Add a shared flag dt property to support multi-ee GSI
usecase in I2C. Do not unconfigure gpios during suspend
state, instead keep them in active mode for dual EE usecase
to avoid transaction failures or other misbehaviour.

Change-Id: Ic71c8782fb6b4c653d8e79cf59b0a5ff3beb3b0a
Signed-off-by: Vipin Deep Kaur <vkaur@codeaurora.org>