src/mainboard: Remove irrelevant conditional statement

Using a conditional statement to return 0 or 1 depending on a logic
value is unnecessarily complex.

Change-Id: I449ce2b71b72374de5ec4986f9cc9f91a67856ee
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29265
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/amd/tilapia_fam10/mainboard.c

@@ -102,13 +102,7 @@ int is_dev3_present(void)
 	/* read the GPIO68 input status */
 	word = pci_read_config16(sm_dev, 0x7e);
 
-	if(word & (1 << 10)){
+	return !(word & (1 << 10));
-		/*not exist*/
-		return 0;
-	}else{
-		/*exist*/
-		return 1;
-	}
 }
 
 

src/mainboard/asus/m4a78-em/mainboard.c

@@ -94,13 +94,7 @@ int is_dev3_present(void)
 	/* read the GPIO68 input status */
 	word = pci_read_config16(sm_dev, 0x7e);
 
-	if(word & (1 << 10)){
+	return !(word & (1 << 10));
-		/*not exist*/
-		return 0;
-	}else{
-		/*exist*/
-		return 1;
-	}
 }
 
 

src/mainboard/asus/m4a785-m/mainboard.c

@@ -104,13 +104,7 @@ int is_dev3_present(void)
 	/* read the GPIO68 input status */
 	word = pci_read_config16(sm_dev, 0x7e);
 
-	if(word & (1 << 10)){
+	return !(word & (1 << 10));
-		/*not exist*/
-		return 0;
-	}else{
-		/*exist*/
-		return 1;
-	}
 }
 
 /*

src/mainboard/gigabyte/ma785gmt/mainboard.c

@@ -102,13 +102,7 @@ int is_dev3_present(void)
 	/* read the GPIO68 input status */
 	word = pci_read_config16(sm_dev, 0x7e);
 
-	if(word & (1 << 10)){
+	return !(word & (1 << 10));
-		/*not exist*/
-		return 0;
-	}else{
-		/*exist*/
-		return 1;
-	}
 }
 
 /*