soc/amd/picasso/southbridge: drop unused sb_enable

Change-Id: I10a16c8f9db994ff33407619a7ab6e453b026b15
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48440
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/soc/amd/picasso/fch.c

@@ -95,11 +95,6 @@ void sb_clk_output_48Mhz(void)
 	misc_write32(MISC_CLK_CNTL1, ctrl);
 }
 
-void sb_enable(struct device *dev)
-{
-	printk(BIOS_DEBUG, "%s\n", __func__);
-}
-
 static void sb_init_acpi_ports(void)
 {
 	u32 reg;

src/soc/amd/picasso/include/soc/southbridge.h

@@ -197,7 +197,6 @@ typedef struct aoac_devs {
 void enable_aoac_devices(void);
 void wait_for_aoac_enabled(unsigned int dev);
 void sb_clk_output_48Mhz(void);
-void sb_enable(struct device *dev);
 void southbridge_final(void *chip_info);
 void southbridge_init(void *chip_info);
 void fch_pre_init(void);