MIPS: Octeon: Simplify code by assuming CONFIG_64BIT is always set.

No 32-bit kernels supported on Octeon.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/cavium-octeon/octeon-memcpy.S

@@ -79,11 +79,6 @@
 /*
  * Only on the 64-bit kernel we can made use of 64-bit registers.
  */
-#ifdef CONFIG_64BIT
-#define USE_DOUBLE
-#endif
-
-#ifdef USE_DOUBLE
 
 #define LOAD   ld
 #define LOADL  ldl
@@ -119,26 +114,6 @@
 #define t6	$14
 #define t7	$15
 
-#else
-
-#define LOAD   lw
-#define LOADL  lwl
-#define LOADR  lwr
-#define STOREL swl
-#define STORER swr
-#define STORE  sw
-#define ADD    addu
-#define SUB    subu
-#define SRL    srl
-#define SLL    sll
-#define SRA    sra
-#define SLLV   sllv
-#define SRLV   srlv
-#define NBYTES 4
-#define LOG_NBYTES 2
-
-#endif /* USE_DOUBLE */
-
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 #define LDFIRST LOADR
 #define LDREST  LOADL
@@ -395,12 +370,10 @@ EXC(	 sb	t0, N(dst), s_exc_p1)
 
 	COPY_BYTE(0)
 	COPY_BYTE(1)
-#ifdef USE_DOUBLE
 	COPY_BYTE(2)
 	COPY_BYTE(3)
 	COPY_BYTE(4)
 	COPY_BYTE(5)
-#endif
 EXC(	lb	t0, NBYTES-2(src), l_exc)
 	SUB	len, len, 1
 	jr	ra

arch/mips/cavium-octeon/setup.c

@@ -666,16 +666,10 @@ void __init plat_mem_setup(void)
 	cvmx_bootmem_lock();
 	while ((boot_mem_map.nr_map < BOOT_MEM_MAP_MAX)
 		&& (total < MAX_MEMORY)) {
-#ifdef CONFIG_64BIT
 		memory = cvmx_bootmem_phy_alloc(mem_alloc_size,
 						__pa_symbol(&__init_end), -1,
 						0x100000,
 						CVMX_BOOTMEM_FLAG_NO_LOCKING);
-#else
-		memory = cvmx_bootmem_phy_alloc(mem_alloc_size, 0, 512 << 20,
-						0x100000,
-						CVMX_BOOTMEM_FLAG_NO_LOCKING);
-#endif
 		if (memory >= 0) {
 			u64 size = mem_alloc_size;