Disable CP Stats for Beryllium emulation environment. These stats are
invoked heavily by userspace and need to be retrieved from the FW.The
userpace is holding the rtnl_lock while invoking these stats. This
prevents any additional commands to be sent while a stats command is
pending. Since in emulation environment, the turnaround time is quite
high, no iwpriv/ifconfig/iw command can be sent while the CP stats are
pending, making the driver in accessible from command line.
Hence, disable CP stats by simply returning 0 to the caller in emulation
environment.
CRs-Fixed: 2984362
Change-Id: I80aee6ce2bed1c37b964dd5e7194a66287301355