Log Message:
Update to 2.4.54:

Alex Deucher (1):
      bump version to 2.4.54 for release

Daniel Kurtz (1):
      Use signed location for drmModeSetPlane

Maarten Lankhorst (2):
      nouveau: safen up nouveau_device list usage against concurrent access
      amend previous commit to actually compile

Rob Clark (2):
      modetest: add cursor support
      freedreno: add missing fxn prototype

Samuel Li (2):
      radeon: add Mullins chip family
      radeon: add Mullins pci ids

Thierry Reding (4):
      Mark functions printf-like where possible
      intel: Fix some format strings
      libdrm: Remove extraneous parameter
      tests: Use drmFreeVersion() instead of drmFree()

Ville Syrjälä (1):
      intel/chv: Add Cherryview PCI IDs