powerpc/32: Add .data..Lubsan_data*/.data..Lubsan_type* sections explicitly

When both CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y and CONFIG_UBSAN=y are set, link step typically produce numberous warnings about orphan section:

+ powerpc-linux-gnu-ld -EB -m elf32ppc -Bstatic --orphan-handling=warn --build-id --gc-sections -X -o .tmp_vmlinux1 -T ./arch/powerpc/kernel/vmlinux.lds --who le-archive built-in.a --no-whole-archive --start-group lib/lib.a --end-group
powerpc-linux-gnu-ld: warning: orphan section .data..Lubsan_data393' from init/main.o' being placed in section `.data..Lubsan_data393'.
powerpc-linux-gnu-ld: warning: orphan section .data..Lubsan_data394' from init/main.o' being placed in section `.data..Lubsan_data394'.
...
powerpc-linux-gnu-ld: warning: orphan section .data..Lubsan_type11' from init/main.o' being placed in section `.data..Lubsan_type11'.
powerpc-linux-gnu-ld: warning: orphan section .data..Lubsan_type12' from init/main.o' being placed in section `.data..Lubsan_type12'.
...

This commit remove those warnings produced at W=1.

---
 arch/powerpc/kernel/vmlinux.lds.S | 4 ++++
 1 file changed, 4 insertions(+)

index 434581bcd5b4..1148c3c60c3b 100644
@@ -308,6 +308,10 @@ SECTIONS
 #ifdef CONFIG_PPC32
 	.data : AT(ADDR(.data) - LOAD_OFFSET) {
 		DATA_DATA
+#ifdef CONFIG_UBSAN
+		*(.data..Lubsan_data*)
+		*(.data..Lubsan_type*)
+#endif
 		*(.data.rel*)
 		*(SDATA_MAIN)
 		*(.sdata2)

2.11.0

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/beba24ac59133cb36ecd03f9af9ccb

cheers