linux: add missing hash for linux 6.1.147

When building a toolchain with kernel headers 6.1.x, the build fail
due to missing hash for linux-6.1.147.tar.xz

The hash was removed by mistake when bumping kernel 6.{6, 12, 15}.x
series.

Fixes: 51b27bad915c95499877c8bf9a16a221c904bf82

Cc: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Julien Olivain <ju.o@free.fr>

linux/linux.hash

@@ -3,6 +3,7 @@ sha256  1a4be2fe6b5246aa4ac8987a8a4af34c42a8dd7d08b46ab48516bcc1befbcd83  linux-
 sha256  e94f3af85492302f7a819441458f80bca0ad9912e5a4c83c699ff3c63c52957d  linux-6.15.9.tar.xz
 sha256  6b19a3ae99423de2416964d67251d745910277af258b4c4c63e88fd87dbf0e27  linux-6.12.41.tar.xz
 sha256  8c4ff2869736538b9b0d88ea8dbf0332b79c6ecc40a32066768a754df1fae1c0  linux-6.6.101.tar.xz
+sha256  218f25663a41e3d811e84fa1c4acec50684898b2f6d0c8c0deb531d937e466f7  linux-6.1.147.tar.xz
 # From https://www.kernel.org/pub/linux/kernel/v5.x/sha256sums.asc
 sha256  e3d0025b87278e14733cb326700f17c7cceb54d920622b0d5fcd58a88c6850c3  linux-5.15.189.tar.xz
 sha256  8d88c3977226d666554b75f480d1e6c5f4e4d2acdf2a3462840c6bac88634d13  linux-5.10.240.tar.xz