msm: SSR: Add debugfs support
Similar in style to the PIL debugfs support, add debugfs for
subsystem restart. Writing "restart" to the debugfs node will
restart that particular subsystem. Reading the file will return
the reference count for the subsystem.
Change-Id: I2c047dc21c61dde32e3482a2d22a4826bbbc0926
Signed-off-by:
Stephen Boyd <sboyd@codeaurora.org>
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