staging: rtlwifi: Replace 0 with false.

Replace 0 with false, Bool intializations should use true or false.
Detected by Coccinelle semantic patch boolinit.cocci.

Signed-off-by: Bhagyashri Dighole <digholebhagyashri@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>