powerpc: Remove CONFIG_POWER3

Now that we have dropped power3 support we can remove CONFIG_POWER3. The
usage in pgtable_32.c was already dead code as CONFIG_POWER3 was not
selectable on PPC32.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/cputable.h

@@ -268,8 +268,7 @@ extern const char *powerpc_base_platform;
 #endif
 
 #define CLASSIC_PPC (!defined(CONFIG_8xx) && !defined(CONFIG_4xx) && \
-		     !defined(CONFIG_POWER3) && !defined(CONFIG_POWER4) && \
-		     !defined(CONFIG_BOOKE))
+		     !defined(CONFIG_POWER4) && !defined(CONFIG_BOOKE))
 
 #define CPU_FTRS_PPC601	(CPU_FTR_COMMON | CPU_FTR_601 | \
 	CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE)

arch/powerpc/mm/pgtable_32.c

@@ -41,7 +41,7 @@ unsigned long ioremap_base;
 unsigned long ioremap_bot;
 EXPORT_SYMBOL(ioremap_bot);	/* aka VMALLOC_END */
 
-#if defined(CONFIG_6xx) || defined(CONFIG_POWER3)
+#ifdef CONFIG_6xx
 #define HAVE_BATS	1
 #endif
 

arch/powerpc/platforms/Kconfig.cputype

@@ -140,10 +140,6 @@ config 6xx
 	depends on PPC32 && PPC_BOOK3S
 	select PPC_HAVE_PMU_SUPPORT
 
-config POWER3
-	depends on PPC64 && PPC_BOOK3S
-	def_bool y
-
 config POWER4
 	depends on PPC64 && PPC_BOOK3S
 	def_bool y