cmd_ecctest.c: Fix GCC 4.6 build warnings

Fix:
cmd_ecctest.c: In function 'inject_ecc_error':
cmd_ecctest.c:116:6: warning: variable 'val' set but not used [-Wunused-but-set-variable]
cmd_ecctest.c: In function 'rewrite_ecc_parity':
cmd_ecctest.c:154:6: warning: variable 'val' set but not used [-Wunused-but-set-variable]

Signed-off-by: Stefan Roese <sr@denx.de>

arch/powerpc/cpu/ppc4xx/cmd_ecctest.c

@@ -113,8 +113,6 @@ static force_inline void set_mcopt1_mchk(u32 bits)
  */
 static void inject_ecc_error(void *ptr, int par)
 {
-	u32 val;
-
 	/*
 	 * Taken from PPC460EX/EXr/GT users manual (Rev 1.21)
 	 * 22.2.17.13 ECC Diagnostics
@@ -124,7 +122,7 @@ static void inject_ecc_error(void *ptr, int par)
 	 */
 
 	out_be32(ptr, 0x00000000);
-	val = in_be32(ptr);
+	in_be32(ptr);
 
 	/* 6. Set memory controller to no error checking */
 	set_mcopt1_mchk(SDRAM_MCOPT1_MCHK_NON);
@@ -136,7 +134,7 @@ static void inject_ecc_error(void *ptr, int par)
 		out_be32(ptr, in_be32(ptr) ^ 0x00000003);
 
 	/* 8. Wait for SDRAM idle */
-	val = in_be32(ptr);
+	in_be32(ptr);
 	set_mcopt1_mchk(SDRAM_MCOPT1_MCHK_CHK_REP);
 
 	/* Wait for SDRAM idle */
@@ -151,7 +149,6 @@ static void rewrite_ecc_parity(void *ptr, int par)
 	u32 end_address;
 	u32 address_increment;
 	u32 mcopt1;
-	u32 val;
 
 	/*
 	 * Fill ECC parity byte again. Otherwise further accesses to
@@ -159,7 +156,7 @@ static void rewrite_ecc_parity(void *ptr, int par)
 	 */
 
 	/* Wait for SDRAM idle */
-	val = in_be32(0x00000000);
+	in_be32(0x00000000);
 	set_mcopt1_mchk(SDRAM_MCOPT1_MCHK_GEN);
 
 	/* ECC bit set method for non-cached memory */