powerpc/64/build: merge .got and .toc input sections

Follow the binutils ld internal linker script and merge .got and .toc
input sections in the .got output section.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220916040755.2398112-7-npiggin@gmail.com

arch/powerpc/kernel/vmlinux.lds.S

@@ -173,8 +173,7 @@ SECTIONS
 	}
 
 	.got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) {
-		*(.got)
-		*(.toc)
+		*(.got .toc)
 	}
 
 	SOFT_MASK_TABLE(8)