linux-firmware: Revert prism54 firmware addition due to licensing

[Chase Douglas]

The following changes since commit 6c0067f4e4aa74197bdbca8a784c0a6514780142:
  Chase Douglas (1):
        Firmware for radeon R600 and R700 graphics hardware

are available in the git repository at:

  git://kernel.ubuntu.com/cndougla/linux-firmware.git lucid

Chase Douglas (1):
      Revert "firmware for prism54 kernel >=2.6.29"

The firmware is missing a license statement, so these files have been moved to
linux-firmware-nonfree.

 prism54/isl3877            |  Bin 112128 -> 0 bytes
 prism54/isl3890            |  Bin 93996 -> 0 bytes
 prism54_softmac/BOM        |    4 ----
 prism54_softmac/isl3886pci |  Bin 29036 -> 0 bytes
 prism54_softmac/isl3886usb |  Bin 29500 -> 0 bytes
 prism54_softmac/isl3887usb |  Bin 29736 -> 0 bytes
 6 files changed, 0 insertions(+), 4 deletions(-)
 delete mode 100644 prism54/isl3877
 delete mode 100644 prism54/isl3890
 delete mode 100644 prism54_softmac/BOM
 delete mode 100644 prism54_softmac/isl3886pci
 delete mode 100644 prism54_softmac/isl3886usb
 delete mode 100644 prism54_softmac/isl3887usb