powerpc/inst: Remove PPC_INST_BRANCH

Convert last users of PPC_INST_BRANCH to PPC_RAW_BRANCH()

And remove PPC_INST_BRANCH.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/fa8807108a2ef2287a2c9651d6e1ff7c051923d9.1652074503.git.christophe.leroy@csgroup.eu

arch/powerpc/include/asm/ppc-opcode.h

@@ -301,7 +301,6 @@
 #define PPC_INST_ADDIS			0x3c000000
 #define PPC_INST_ADD			0x7c000214
 #define PPC_INST_DIVD			0x7c0003d2
-#define PPC_INST_BRANCH			0x48000000
 #define PPC_INST_BL			0x48000001
 #define PPC_INST_BRANCH_COND		0x40800000
 
@@ -586,7 +585,7 @@
 #define PPC_RAW_MTSPR(spr, d)		(0x7c0003a6 | ___PPC_RS(d) | __PPC_SPR(spr))
 #define PPC_RAW_EIEIO()			(0x7c0006ac)
 
-#define PPC_RAW_BRANCH(addr)		(PPC_INST_BRANCH | ((addr) & 0x03fffffc))
+#define PPC_RAW_BRANCH(offset)		(0x48000000 | PPC_LI(offset))
 #define PPC_RAW_BL(offset)		(0x48000001 | PPC_LI(offset))
 
 /* Deal with instructions that older assemblers aren't aware of */

arch/powerpc/lib/feature-fixups.c

@@ -451,7 +451,7 @@ static int __do_rfi_flush_fixups(void *data)
 
 	if (types & L1D_FLUSH_FALLBACK)
 		/* b .+16 to fallback flush */
-		instrs[0] = PPC_INST_BRANCH | 16;
+		instrs[0] = PPC_RAW_BRANCH(16);
 
 	i = 0;
 	if (types & L1D_FLUSH_ORI) {