ramips: enable BR6425N in kernel config

Though originally contained in the patch applied in r35020, the move to 3.7 in
r34845 lost the kernel .config option. Reintroduce it to config-3.7.

Signed-off-by: Daniel Golle <[email protected]>

SVN-Revision: 35191

target/linux/ramips/rt288x/config-3.7

@@ -106,6 +106,7 @@ CONFIG_RALINK_RT288X=y
 # CONFIG_RALINK_RT305X is not set
 # CONFIG_RALINK_RT3883 is not set
 CONFIG_RAMIPS_WDT=y
+CONFIG_RT288X_MACH_BR6524N=y
 CONFIG_RT288X_MACH_F5D8235_V1=y
 CONFIG_RT288X_MACH_RT_N15=y
 CONFIG_RT288X_MACH_V11ST_FE=y