target: use proper format with uint32_t

Modify the format strings to properly handle uint32_t data types.

While there, fix prototype mismatch between header and C file of
the function armv7a_l1_d_cache_inval_virt().

Change-Id: I434bd241fa5c38e0c15d22cda2295097050067f5
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5818
Tested-by: jenkins

src/target/arc.h

@@ -55,7 +55,7 @@
 #define REG_TYPE_MAX_NAME_LENGTH	20
 
 /* ARC 32bits opcodes */
-#define ARC_SDBBP_32 0x256F003F  /* BRK */
+#define ARC_SDBBP_32 0x256F003FU  /* BRK */
 
 /* ARC 16bits opcodes */
 #define ARC_SDBBP_16 0x7FFF      /* BRK_S */