[PATCH v2] docs: admin-guide: update tiny script for number of taint flags

[Randy Dunlap <rdunlap@infradead.org>]

Account for 2 new taint flags being added by increasing the number of
bits handled by the tiny show-tainted-flags example script.

Fixes: 8eea4e744758 ("taint: Add TAINT_FWCTL")
Fixes: 2852ca7fba9f ("panic: Taint kernel if tests are run")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: David Gow <davidgow@google.com>
---
v2: rebase and resend

@Jason: the note that you asked to be added to kernel/panic.c has
already been merged: commit ed4bbe7e8fa1:
  Author: Randy Dunlap <rdunlap@infradead.org>
  Date:   Wed Oct 15 15:16:26 2025 -0700
    taint: add reminder about updating docs and scripts

Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: David Gow <davidgow@google.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
---
 Documentation/admin-guide/tainted-kernels.rst |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20260213.orig/Documentation/admin-guide/tainted-kernels.rst
+++ linux-next-20260213/Documentation/admin-guide/tainted-kernels.rst
@@ -74,7 +74,7 @@ a particular type of taint. It's best to
 script, but if you need something quick you can use this shell command to check
 which bits are set::
 
-	$ for i in $(seq 18); do echo $(($i-1)) $(($(cat /proc/sys/kernel/tainted)>>($i-1)&1));done
+	$ for i in $(seq 20); do echo $(($i-1)) $(($(cat /proc/sys/kernel/tainted)>>($i-1)&1));done
 
 Table for decoding tainted state
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~