powerpc/64: Remove unused prom_init_toc symbols

Commit 24d33ac ("powerpc/64s: Make prom_init require RELOCATABLE")
made prom_init depend on CONFIG_RELOCATABLE.

But it missed cleaning up a case in the linker script for RELOCATABLE=n,
and associated symbols. Remove them now.

Fixes: 24d33ac ("powerpc/64s: Make prom_init require RELOCATABLE")
Reported-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220920131157.1032707-1-mpe@ellerman.id.au

arch/powerpc/include/asm/sections.h

@@ -32,9 +32,6 @@ extern long kvm_flush_link_stack;
 extern char __start_interrupts[];
 extern char __end_interrupts[];
 
-extern char __prom_init_toc_start[];
-extern char __prom_init_toc_end[];
-
 #ifdef CONFIG_PPC_POWERNV
 extern char start_real_trampolines[];
 extern char end_real_trampolines[];

arch/powerpc/kernel/prom_init_check.sh

@@ -26,8 +26,7 @@ _end enter_prom $MEM_FUNCS reloc_offset __secondary_hold
 __secondary_hold_acknowledge __secondary_hold_spinloop __start
 logo_linux_clut224 btext_prepare_BAT
 reloc_got2 kernstart_addr memstart_addr linux_banner _stext
-__prom_init_toc_start __prom_init_toc_end btext_setup_display TOC.
-relocate"
+btext_setup_display TOC. relocate"
 
 NM="$1"
 OBJ="$2"

arch/powerpc/kernel/vmlinux.lds.S

@@ -337,11 +337,6 @@ SECTIONS
 
 	.got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) {
 		*(.got)
-#ifndef CONFIG_RELOCATABLE
-		__prom_init_toc_start = .;
-		arch/powerpc/kernel/prom_init.o*(.toc)
-		__prom_init_toc_end = .;
-#endif
 		*(.toc)
 	}
 #endif