msm: ipc_logging: Support multiplatform

Upstream prefers existing drivers be converted to support multiplatform
kernels.  This requires drivers to be located in generic functionality
directories instead of specific mach directories.

Move the ipc_logging driver to the kernel/trace location to support
multiplatform.

Change-Id: I8b217f2c13254814e9dfa95f46308150f1fc2a1b
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>