[PPC] Use cpu setup routines from cpu_setup_44x.S for ARCH=ppc

Commit 8112753 made 44x in
ARCH=powerpc builds use cpu setup routines in cpu_setup_44x.S,
but didn't make a similar change for ARCH=ppc, and consequently
the ARCH=ppc builds fail with undefined symbols (since both use
the same cputable.c).

This fixes it by including cpu_setup_44x.S in the ARCH=ppc builds,
and by taking out the now-redundant FPU initialization in
arch/ppc/kernel/head_44x.S.

Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/kernel/Makefile

@@ -42,6 +42,7 @@ obj-$(CONFIG_HIBERNATION)	+= swsusp.o suspend.o \
 				   swsusp_$(CONFIG_WORD_SIZE).o
 obj64-$(CONFIG_HIBERNATION)	+= swsusp_asm64.o
 obj-$(CONFIG_MODULES)		+= module_$(CONFIG_WORD_SIZE).o
+obj-$(CONFIG_44x)		+= cpu_setup_44x.o
 
 ifeq ($(CONFIG_PPC_MERGE),y)
 
@@ -58,7 +59,6 @@ obj-y				+= time.o prom.o traps.o setup-common.o \
 				   misc_$(CONFIG_WORD_SIZE).o
 obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o
 obj-$(CONFIG_PPC64)		+= dma_64.o iommu.o
-obj-$(CONFIG_44x)		+= cpu_setup_44x.o
 obj-$(CONFIG_PPC_MULTIPLATFORM)	+= prom_init.o
 obj-$(CONFIG_MODULES)		+= ppc_ksyms.o
 obj-$(CONFIG_BOOTX_TEXT)	+= btext.o

arch/ppc/kernel/head_44x.S

@@ -227,16 +227,6 @@ skpinv:	addi	r4,r4,1				/* Increment */
 	lis	r4,interrupt_base@h	/* IVPR only uses the high 16-bits */
 	mtspr	SPRN_IVPR,r4
 
-#ifdef CONFIG_440EP
-	/* Clear DAPUIB flag in CCR0 (enable APU between CPU and FPU) */
-	mfspr	r2,SPRN_CCR0
-	lis	r3,0xffef
-	ori	r3,r3,0xffff
-	and	r2,r2,r3
-	mtspr	SPRN_CCR0,r2
-	isync
-#endif
-
 	/*
 	 * This is where the main kernel code starts.
 	 */