debug-mmrs: Eliminate all traces of the USB_PHY_TEST MMR

Interacting with the USB_PHY_TEST MMR through debugfs was causing wide-spread
chaos in the realm (kernel panic). Expunge all references to this demonic
register.

Signed-off-by: Andre Wolokita <Andre.Wolokita@analog.com>

diff --cc arch/blackfin/kernel/debug-mmrs.c
Simple merge

diff --cc arch/blackfin/mach-bf527/include/mach/cdefBF525.h
Simple merge

diff --cc arch/blackfin/mach-bf527/include/mach/defBF525.h
Simple merge

diff --cc arch/blackfin/mach-bf548/include/mach/cdefBF542.h
Simple merge

diff --cc arch/blackfin/mach-bf548/include/mach/cdefBF547.h
Simple merge

diff --cc arch/blackfin/mach-bf548/include/mach/defBF542.h
Simple merge

diff --cc arch/blackfin/mach-bf548/include/mach/defBF547.h
Simple merge