Excessive frame size

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In a MIPS allyesconfig build I got the following warning:

  CC [M]  drivers/staging/vt6656/int.o
drivers/staging/vt6656/iwctl.c: In function ‘iwctl_giwaplist’:
drivers/staging/vt6656/iwctl.c:787:1: warning: the frame size of 1288 bytes is larger than 1024 bytes [-Wframe-larger-than=]

That's a huge stackpig already on a 32-bit kernel and it will only be bigger
on a 64-bit kernel!

  Ralf
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