[NETDRV] Fix successive calls to spin_lock_irqsave in sk98lin

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

Hi Jeff:

This patch fixes the few places in sk98lin where it calls
spin_lock_saveirq on the same flags variable thus causing
interrupts to be disabled upon leaving the driver.

Cheers,
-- 
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Email:  Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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