wifi: b43: do not initialise static variable to 0

No need to initialise static variables to zero.
Signed-off-by: Xin Gao <gaoxin@cdjrlc.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
[kvalo@kernel.org: improve commit log]
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220720194245.8442-1-gaoxin@cdjrlc.com

drivers/net/wireless/broadcom/b43/main.c

@@ -105,7 +105,7 @@ int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
 module_param_named(verbose, b43_modparam_verbose, int, 0644);
 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
 
-static int b43_modparam_pio = 0;
+static int b43_modparam_pio;
 module_param_named(pio, b43_modparam_pio, int, 0644);
 MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");