staging: ti dspbridge: Rename words with camel case.

The intention of this patch is to rename the remaining variables with camel
case. Variables will be renamed avoiding camel case and Hungarian notation.
The words to be renamed in this patch are:
========================================
pdwSize to buff_size
pdwState to board_state
pdwValue to value
pdwVersion to version
pElemExisting to elem_existing
pEntry to entry
pExists to exists
pfEnablePerf to enable_perf
pGenObj to gen_obj
phChnlMgr to channel_mgr
phChnl to chnl
phCodMgr to cod_mgr
phDCDHandle to dcd_handle
phDcdMgr to dcd_mgr
phDehMgr to deh_manager
========================================

Signed-off-by: Rene Sapiens <rene.sapiens@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>