staging: wlags49_h2: Declare support for WEXT 21
staging: wlags49_h2: Declare support for WEXT 21

WEXT changes between versions 15 and 21 have been taken care of,
so update the declared support.

Signed-off-by: David Kilroy <25855433d920ab041e83d01b39337d2a5802554f@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@suse.de>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas