fix tests concerning import section entries for functions

Author: xdoardo

llvm/test/CodeGen/RISCV/cheri/cheri-local-libcall.ll

@@ -34,11 +34,11 @@ attributes #1 = { minsize mustprogress nofree norecurse nosync nounwind optsize
 ; CHECK-NEXT:	.byte	0
 ; CHECK-NEXT:	.byte	8
 ; CHECK-NEXT:	.size	__export_hello__Z9say_hellov, 4
-; CHECK-NEXT:	.section	.compartment_imports,"aG",@progbits,__library_import_hello__Z11id_functionv,comdat
+; CHECK-NEXT:	.section	.compartment_imports._Z11id_functionv,"aG",@progbits,__library_import_hello__Z11id_functionv,comdat
 ; CHECK-NEXT:	.type	__library_import_hello__Z11id_functionv,@object
 ; CHECK-NEXT:	.weak	__library_import_hello__Z11id_functionv
 ; CHECK-NEXT:	.p2align	3, 0x0
 ; CHECK-NEXT:__library_import_hello__Z11id_functionv:
 ; CHECK-NEXT:	.word	__library_export_hello__Z11id_functionv+1
 ; CHECK-NEXT:	.word	0
-; CHECK-NEXT:	.size	__library_import_hello__Z11id_functionv, 8
+; CHECK-NEXT:	.size	__library_import_hello__Z11id_functionv, 8

llvm/test/CodeGen/RISCV/cheri/cheri-mcu-ccall.ll

@@ -157,7 +157,7 @@ attributes #6 = { minsize nounwind optsize }
 ; CHECK:        .byte   0
 ; CHECK:        .byte   7
 ; CHECK:        .size   __export_example_test8, 4
-; CHECK:        .section        .compartment_imports,"aG",@progbits,__import_other_test8callee,comdat
+; CHECK:        .section        .compartment_imports.test8callee,"aG",@progbits,__import_other_test8callee,comdat
 ; CHECK:        .type   __import_other_test8callee,@object
 ; CHECK:        .weak  __import_other_test8callee
 ; CHECK:        .p2align        3

llvm/test/CodeGen/RISCV/cheri/cheri-mcu-ccallback.ll

@@ -66,15 +66,15 @@ entry:
 }
 
 ; Make sure that the import and export table entries are local for the internal function.
-; CHECK: .section        .compartment_imports,"a",@progbits
+; CHECK: .section        .compartment_imports.cb,"a",@progbits
 ; CHECK-NOT: comdat
 ; CHECK-NOT: .globl __import_comp_cb
 ; CHECK: __import_comp_cb:
 ; CHECK-NOT: comdat
 ; CHECK-NOT: .globl __export_comp_cb
 ; CHECK-NOT: .globl __export_comp_ecb
 ; Make sure that the import table entry a COMDAT for the external function
-; CHECK:        .section        .compartment_imports,"aG",@progbits,__import_comp_ecb,comdat
+; CHECK:        .section        .compartment_imports.ecb,"aG",@progbits,__import_comp_ecb,comdat
 ; CHECK:        .type   __import_comp_ecb,@object
 ; CHECK:        .weak   __import_comp_ecb
 ; CHECK:        .p2align        3