KVM: PPC: Book3S HV: kvmppc_hv_entry: remove .global scope

kvmppc_hv_entry isn't called from anywhere other than
book3s_hv_rmhandlers.S itself. Remove .global scope for this function
and annotate it with SYM_CODE_START_LOCAL and SYM_CODE_END.
Signed-off-by: Kautuk Consul <kconsul@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230327113320.3407491-1-kconsul@linux.vnet.ibm.com

arch/powerpc/kvm/book3s_hv_rmhandlers.S

@@ -502,8 +502,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
  *                                                                            *
  *****************************************************************************/
 
-.global kvmppc_hv_entry
-kvmppc_hv_entry:
+SYM_CODE_START_LOCAL(kvmppc_hv_entry)
 
 	/* Required state:
 	 *
@@ -940,6 +939,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
 	ld	r4, VCPU_GPR(R4)(r4)
 	HRFI_TO_GUEST
 	b	.
+SYM_CODE_END(kvmppc_hv_entry)
 
 secondary_too_late:
 	li	r12, 0