Bump kernel to the latest 6.6 version

Author: hifiberry

configs/override.conf

@@ -23,7 +23,7 @@ BR2_TARGET_GENERIC_ROOT_PASSWD="hifiberry"
 # End Linux 6.1
 
 # Linux 6.6
-BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,886f86f97c0b64322aec955f62d9b1fd3330304e)/linux-886f86f97c0b64322aec955f62d9b1fd3330304e.tar.gz"
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,55faf2eb5190410941aaabdc5bbd2c74c27f546e)/linux-55faf2eb5190410941aaabdc5bbd2c74c27f546e.tar.gz"
 
 
 BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="../hifiberry-os/buildroot/disable-drivers.fragment ../hifiberry-os/buildroot/uncompressed-modules.fragment"