tegra: bring back workaround for spurious interrupts

tegra: bring back workaround for spurious interrupts

Unfortunately they still apear with prolonged serial console usage.
While it's not common to use serial console past initial setup, alas
when the condition is hit the console is almost unusable.

Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Link: https://patchwork.ozlabs.org/project/openwrt/patch/20250618170045.473711-2-tmn505@terefe.re/
(cherry picked from commit b8dea6056d32431f21096760df71a6d98441945a)
Link: https://github.com/openwrt/openwrt/pull/19555
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>