readme: remove todo for xhci

usage:
  # list presets
  ls /sys/class/leds/

  # set a preset
  echo 255 > /sys/class/leds/ps5:<preset>:indicator/brightness

  # turn off
  echo 0 > /sys/class/leds/ps5:off:indicator/brightness

README.md

@@ -6,7 +6,7 @@
 git clone https://github.com/ps5-linux/ps5-linux-patches
 git clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
 cd linux
-git checkout tags/v7.0.5
+git checkout "tags/v$(grep -m1 "^# Linux/" ../ps5-linux-patches/.config | awk '{print $3}')"
 git apply ../ps5-linux-patches/linux.patch
 cp ../ps5-linux-patches/.config .config
 make -j$(nproc)
@@ -21,27 +21,9 @@ sudo make modules_install
 sudo make install
 ```
 
-If you use Arch Linux, then additionally do:
-
-```bash
-sudo mkinitcpio -k "$(make kernelrelease)" -g /boot/initrd.img-$(make kernelrelease) || true
-```
-
-If you are updating Linux on your external USB SSD or if you are directly booting into M.2 SSD, i.e. if you use `-m2` in `cmdline.txt`, then you have to update the files on the FAT32 partition of your USB drive:
-
-```bash
-sudo cp /boot/vmlinuz /boot/efi/bzImage
-sudo cp /boot/initrd.img /boot/efi/initrd.img
-```
-
-If you are updating Linux on your M.2 SSD, but you do not directly boot into it, i.e. if you use `m2_exec.sh`, then you do need to do this step.
-
-
 ## TODO
 
 - amdgpu smu driver to show correct gpu frequency and temperature
-- ethernet driver for (mediatek?) 0x104d:0x9104
-- xhci driver adjustment for 0x104d:0x9108 to enable bluetooth
 - hdmi converter improvments: hdr, rgb range, 120hz
 
 ## Bugs