Update 86 files

• /kernel/bio.c
• /kernel/console.c
• /kernel/disk.c
• /kernel/dmac.c
• /kernel/entry_k210.S
• /kernel/entry_qemu.S
• /kernel/exec.c
• /kernel/fat32.c
• /kernel/file.c
• /kernel/fpioa.c
• /kernel/gpiohs.c
• /kernel/intr.c
• /kernel/kalloc.c
• /kernel/kernelvec.S
• /kernel/logo.c
• /kernel/main.c
• /kernel/null.c
• /kernel/pipe.c
• /kernel/plic.c
• /kernel/printf.c
• /kernel/proc.c
• /kernel/rbtree.c
• /kernel/sdcard.c
• /kernel/signal.c
• /kernel/sleeplock.c
• /kernel/spi.c
• /kernel/spinlock.c
• /kernel/string.c
• /kernel/swtch.S
• /kernel/syscall.c
• /kernel/sysctl.c
• /kernel/sysfile.c
• /kernel/sysproc.c
• /kernel/timer.c
• /kernel/trampoline.S
• /kernel/trap.c
• /kernel/uart.c
• /kernel/uname.c
• /kernel/utils.c
• /kernel/virtio_disk.c
• /kernel/vm.c
• /kernel/xv6-riscv-license
• /kernel/zero.c
• /kernel/include/buf.h
• /kernel/include/console.h
• /kernel/include/defs.h
• /kernel/include/disk.h
• /kernel/include/dmac.h
• /kernel/include/elf.h
• /kernel/include/errno.h
• /kernel/include/fat32.h
• /kernel/include/fcntl.h
• /kernel/include/file.h
• /kernel/include/fpioa.h
• /kernel/include/gpiohs.h
• /kernel/include/intr.h
• /kernel/include/kalloc.h
• /kernel/include/memlayout.h
• /kernel/include/null.h
• /kernel/include/param.h
• /kernel/include/pipe.h
• /kernel/include/plic.h
• /kernel/include/printf.h
• /kernel/include/proc.h
• /kernel/include/rbtree.h
• /kernel/include/riscv.h
• /kernel/include/sbi.h
• /kernel/include/sdcard.h
• /kernel/include/signal.h
• /kernel/include/sleeplock.h
• /kernel/include/spi.h
• /kernel/include/spinlock.h
• /kernel/include/stat.h
• /kernel/include/string.h
• /kernel/include/syscall.h
• /kernel/include/sysctl.h
• /kernel/include/sysinfo.h
• /kernel/include/sysnum.h
• /kernel/include/timer.h
• /kernel/include/trap.h
• /kernel/include/types.h
• /kernel/include/uname.h
• /kernel/include/utils.h
• /kernel/include/virtio.h
• /kernel/include/vm.h
• /kernel/include/zero.h