[PATCH] wireless: char* -> char[] conversion in airo.c

[PATCH] wireless: char* -> char[] conversion in airo.c

This conversion makes code from line 7101 right:
	if (copy_to_user(com.data, swversion, sizeof(swversion)))

size output (before, after):
  55416    2228     160   57804    e1cc drivers/net/wireless/airo.o
  55412    2228     160   57800    e1c8 drivers/net/wireless/airo.o

more outputs from Alexey Dobriyan:
2.95.3:
           text    data     bss     dec     hex filename
before    51118    2156     160   53434    d0ba drivers/net/wireless/airo.o
after     51118    2156     160   53434    d0ba drivers/net/wireless/airo.o

3.3.5-20050130:
before    46999    2156     160   49315    c0a3 drivers/net/wireless/airo.o
after     46994    2156     160   49310    c09e drivers/net/wireless/airo.o

4.1.0-20050522:
before    45555    2220     160   47935    bb3f drivers/net/wireless/airo.o
after     45550    2220     160   47930    bb3a drivers/net/wireless/airo.o

Signed-off-by: Domen Puncer <domen@coderock.org>