MIPS: Fix __show_regs() output

MIPS: Fix __show_regs() output

Since commit 4bcc595ccd80 ("printk: reinstate KERN_CONT for printing
continuation lines") the output from __show_regs() on MIPS has been
pretty unreadable due to the lack of KERN_CONT markers. Use pr_cont to
provide the appropriate markers & restore the expected register output.

Signed-off-by: Paul Burton <[email protected]>
Signed-off-by: Matt Redfearn <[email protected]>
Cc: Maciej W. Rozycki <[email protected]>
Cc: James Hogan <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/14432/
Signed-off-by: Ralf Baechle <[email protected]>