macintosh/via-macii: Fix "BUG: sleeping function called from invalid context"

The via-macii ADB driver calls request_irq() after disabling hard
interrupts. But disabling interrupts isn't necessary here because the
VIA shift register interrupt was masked during VIA1 initialization.

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/419fcc09d0e563b425c419053d02236b044d86b0.1710298421.git.fthain@linux-m68k.org


Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>