amd/sb700: clean up recommended changes

This patch addresses changes requested to commit 85c39a4c
(southbridge/amd/sb700: Add Suspend to RAM (S3) support)

- remove unused/commented out code
- remove unnecessary guards around acpi_get_sleep_type()

Change-Id: I2878e038d2f9f8d182615e1f4a75ddce5c45d5f3
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: http://review.coreboot.org/12206
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Tested-by: build bot (Jenkins)

src/southbridge/amd/sb700/early_setup.c

@@ -621,11 +621,7 @@ static void sb700_pmio_por_init(void)
 	byte |= 1 << 0;
 	pmio_write(0xB2, byte);
 
-	// FIXME: Enabling this causes boot to hang while initializing processors.
-// 	/* Enable automatic C1e state switch */
-// 	byte = pmio_read(0xc9);
-// 	byte |= 0x11;
-// 	pmio_write(0xc9, byte);
+	/* NOTE: Enabling automatic C1e state switch caused failures when initializing processors */
 
 	/* Enable precision HPET clock and automatic C state switch */
 	byte = pmio_read(0xbb);

src/southbridge/amd/sb700/lpc.c

@@ -87,13 +87,11 @@ static void lpc_init(device_t dev)
 	cmos_check_update_date();
 }
 
-#if (!IS_ENABLED(CONFIG_EARLY_CBMEM_INIT))
 int acpi_get_sleep_type(void)
 {
 	u16 tmp = inw(ACPI_PM1_CNT_BLK);
 	return ((tmp & (7 << 10)) >> 10);
 }
-#endif
 
 #if IS_ENABLED(CONFIG_LATE_CBMEM_INIT)
 void backup_top_of_ram(uint64_t ramtop)