sparc32: Put back SPARC_BRANCH.

It's needed for the floppy interrupt trap table patching.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/traps.h

@@ -31,6 +31,13 @@ extern struct tt_entry *sparc_ttable;
 
 #define SPARC_MOV_CONST_L3(const) (0xa6102000 | (const&0xfff))
 
+/* The following assumes that the branch lies before the place we
+ * are branching to.  This is the case for a trap vector...
+ * You have been warned.
+ */
+#define SPARC_BRANCH(dest_addr, inst_addr) \
+          (0x10800000 | (((dest_addr-inst_addr)>>2)&0x3fffff))
+
 #define SPARC_RD_PSR_L0  (0xa1480000)
 #define SPARC_RD_WIM_L3  (0xa7500000)
 #define SPARC_NOP (0x01000000)