Kernel - Fixed hack that was tripping armv7 alignment warnings
Usermode/libc - Fixed %x/%X being signed in printf
Kernel/timers - Fixed bad assertions
Usermode/lspci - Cleanup and BAR dump
Kernel/PCI - Added function to access the Command field, better BAR functions

- New BAR access function allows consistent sanity checking
Modules/E1000 - Enabled bus master for qemu (which doesn't enable it)
Usermode/lspci - Dump command state in verbose