Update ABI documentation about the introduction of the new sysfs
entry bootargs_append. This sysfs entry will be used to setup the
additional parameters to be passed to dump capture kernel.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240510082114.561163-1-hbathini@linux.ibm.com