powerpc/vmlinux: Remove etext, edata and end

etext is not used anymore since commit 843a1ffaf6f2 ("powerpc/mm: use
core_kernel_text() helper")

edata and end have not been used since the merge of arch/ppc/ and
arch/ppc64/

Remove the three and remove macro PROVIDE32.

Signed-off-by: Christophe Leroy <[e-mail]>
Signed-off-by: Madhavan Srinivasan <[e-mail]>
Link: https://patch.msgid.link/d1686d36[e-mail]

arch/powerpc/kernel/vmlinux.lds.S

···
 /* SPDX-License-Identifier: GPL-2.0 */
-#ifdef CONFIG_PPC64
-#define PROVIDE32(x)	PROVIDE(__unused__##x)
-#else
-#define PROVIDE32(x)	PROVIDE(x)
-#endif
-
 #define BSS_FIRST_SECTIONS *(.bss.prominit)
 #define EMITS_PT_NOTE
 #define RO_EXCEPTION_TABLE_ALIGN	0
···
 
 	. = ALIGN(PAGE_SIZE);
 	_etext = .;
-	PROVIDE32 (etext = .);
 
 	/* Read-only data */
 	RO_DATA(PAGE_SIZE)
···
 
 	. = ALIGN(PAGE_SIZE);
 	_edata  =  .;
-	PROVIDE32 (edata = .);
 
 /*
  * And finally the bss
···
 
 	. = ALIGN(PAGE_SIZE);
 	_end = . ;
-	PROVIDE32 (end = .);
 
 	DWARF_DEBUG
 	ELF_DETAILS

arch/powerpc/kvm/book3s_32_mmu_host.c

···
 	return (u32*)pteg;
 }
 
-extern char etext[];
-
 int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *orig_pte,
 			bool iswrite)
 {