ANDROID: GKI: of: platform: initialize of_reserved_mem

Initialize reserved memory as part of of_platform_device_create_pdata.

Change-Id: I6bb6ba8279af6771cb61087405cb915f4a0602b3
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Bug: 147914088
(cherry picked from commit cb68ecf3)
Signed-off-by: Saravana Kannan <saravanak@google.com>