8xxx: fix warning: implicit declaration of function 'uec_standard_init'

Commit 8e55258f created function uec_standard_init() to initialize
all UEC interfaces for 83xx and 85xx but failed to provide a
prototype for it.

Signed-off-by: Wolfgang Denk <wd@denx.de>

include/netdev.h

@@ -73,6 +73,7 @@ int scc_initialize(bd_t *bis);
 int skge_initialize(bd_t *bis);
 int tsi108_eth_initialize(bd_t *bis);
 int uec_initialize(int index);
+int uec_standard_init(bd_t *bis);
 int uli526x_initialize(bd_t *bis);
 int sh_eth_initialize(bd_t *bis);
 int dm9000_initialize(bd_t *bis);