Linux Kernel 6.1 now being officially promoted to be a LTS, this
commit bump the kernel version of this defconfig to 6.1.14.
A Kernel config fragment "linux.fragment" is now needed as the kernel
no longer enable SBI v0.1 support and the earlycon RISC-V SBI in its
riscv arch defconfig. See [1] [2].
The Spike riscv-isa-sim was updated upstream accordingly [3].
In order to keep a smooth transition, this kernel config fragment
re-enable those options to make sure this kernel will work with
both old Spike versions (not including commit [3] like the v1.1.0
currently included in Buildroot), and newer versions. This commit
was also successfully tested with riscv-isa-sim at commit
0d1a48c0c0.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6f562570b9c5d6a3e30d87aec60a9d8f22a3203c
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3938d5a2f9369d1ebd56320629fed395ce327e9c
[3] 191634d285
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
