MIPS: ath79: Remove some unused code from setup.c

Remove the unused defines for the reference clocks rate
and the useless machine init function.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11505/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 8755d61..be451ee4a 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -36,10 +36,6 @@
 
 #define ATH79_SYS_TYPE_LEN	64
 
-#define AR71XX_BASE_FREQ	40000000
-#define AR724X_BASE_FREQ	5000000
-#define AR913X_BASE_FREQ	5000000
-
 static char ath79_sys_type[ATH79_SYS_TYPE_LEN];
 
 static void ath79_restart(char *command)
@@ -272,15 +268,10 @@
 	unflatten_and_copy_device_tree();
 }
 
-static void __init ath79_generic_init(void)
-{
-	/* Nothing to do */
-}
-
 MIPS_MACHINE(ATH79_MACH_GENERIC,
 	     "Generic",
 	     "Generic AR71XX/AR724X/AR913X based board",
-	     ath79_generic_init);
+	     NULL);
 
 MIPS_MACHINE(ATH79_MACH_GENERIC_OF,
 	     "DTB",