asrock/e350m1: Remove unused file `acpi/smbus.asl`

Commit 8d80a3fb (ASRock DSDT: Split the ASRock DSDT) creates the file
`acpi/smbus.asl` in the board directory, but includes the identical
southbridge file in `dsdt.asl`.

So, the file is actually unused. Therefore remove it.

Change-Id: I26c5a2eaf3822d37da2402da65b278a3ee6d42f0
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/10544
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/mainboard/asrock/e350m1/acpi/smbus.asl

@@ -1,113 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2011 Advanced Micro Devices, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-/* SMBUS Support */
-Mutex (SBX0, 0x00)
-OperationRegion (SMB0, SystemIO, 0xB00, 0x0C)
-	Field (SMB0, ByteAcc, NoLock, Preserve) {
-		HSTS,   8,  /* SMBUS status */
-		SSTS,   8,  /* SMBUS slave status */
-		HCNT,   8,  /* SMBUS control */
-		HCMD,   8,  /* SMBUS host cmd */
-		HADD,   8,  /* SMBUS address */
-		DAT0,   8,  /* SMBUS data0 */
-		DAT1,   8,  /* SMBUS data1 */
-		BLKD,   8,  /* SMBUS block data */
-		SCNT,   8,  /* SMBUS slave control */
-		SCMD,   8,  /* SMBUS shadow cmd */
-		SEVT,   8,  /* SMBUS slave event */
-		SDAT,   8   /* SMBUS slave data */
-}
-
-Method (WCLR, 0, NotSerialized) { /* clear SMBUS status register */
-	Store (0x1E, HSTS)
-	Store (0xFA, Local0)
-	While (LAnd (LNotEqual (And (HSTS, 0x1E), Zero), LGreater (Local0, Zero))) {
-		Stall (0x64)
-		Decrement (Local0)
-	}
-
-	Return (Local0)
-}
-
-Method (SWTC, 1, NotSerialized) {
-	Store (Arg0, Local0)
-	Store (0x07, Local2)
-	Store (One, Local1)
-	While (LEqual (Local1, One)) {
-		Store (And (HSTS, 0x1E), Local3)
-		If (LNotEqual (Local3, Zero)) { /* read sucess */
-			If (LEqual (Local3, 0x02)) {
-				Store (Zero, Local2)
-			}
-
-			Store (Zero, Local1)
-		}
-		Else {
-			If (LLess (Local0, 0x0A)) { /* read failure */
-				Store (0x10, Local2)
-				Store (Zero, Local1)
-			}
-			Else {
-				Sleep (0x0A) /* 10 ms, try again */
-				Subtract (Local0, 0x0A, Local0)
-			}
-		}
-	}
-
-	Return (Local2)
-}
-
-Method (SMBR, 3, NotSerialized) {
-	Store (0x07, Local0)
-	If (LEqual (Acquire (SBX0, 0xFFFF), Zero)) {
-		Store (WCLR (), Local0) /* clear SMBUS status register before read data */
-		If (LEqual (Local0, Zero)) {
-			Release (SBX0)
-			Return (0x0)
-		}
-
-		Store (0x1F, HSTS)
-		Store (Or (ShiftLeft (Arg1, One), One), HADD)
-		Store (Arg2, HCMD)
-		If (LEqual (Arg0, 0x07)) {
-			Store (0x48, HCNT) /* read byte */
-		}
-
-		Store (SWTC (0x03E8), Local1) /* 1000 ms */
-		If (LEqual (Local1, Zero)) {
-			If (LEqual (Arg0, 0x07)) {
-				Store (DAT0, Local0)
-			}
-		}
-		Else {
-			Store (Local1, Local0)
-		}
-
-		Release (SBX0)
-	}
-
-	/* DBGO("the value of SMBusData0 register ") */
-	/* DBGO(Arg2) */
-	/* DBGO(" is ") */
-	/* DBGO(Local0) */
-	/* DBGO("\n") */
-
-	Return (Local0)
-}