parisc: Avoid trashing sr2 and sr3 in LWS code
There is no need to trash sr2 and sr3 in the Light-weight syscall (LWS). sr2 already points to kernel space (it's zero in userspace, otherwise syscalls wouldn't work), and since the LWS code is executed in userspace, we can simply ignore to preload sr3. Signed-off-by: NJohn David Anglin <dave.anglin@bell.net> Signed-off-by: NHelge Deller <deller@gmx.de>
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