efi_loader: do not use symbolic links

Symbolic links are not supported on all file systems, e.g. not on FAT. So
it is not wise to use them in our source tree.

Use a qualified path to refer to lib/efi_loader/efi_freestanding.c in
scripts/Makefile.lib instead.

Reported-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: Fix build with O=]
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_selftest/efi_freestanding.c b/lib/efi_selftest/efi_freestanding.c
deleted file mode 120000
index 4b7edd5..0000000
--- a/lib/efi_selftest/efi_freestanding.c
+++ /dev/null
@@ -1 +0,0 @@
-../efi_loader/efi_freestanding.c
\ No newline at end of file
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 4facb76..66e5015 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -389,7 +389,7 @@
 	$(call cmd,force_checksrc)
 	$(call if_changed_rule,cc_o_c)
 
-$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
+$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/../efi_loader/efi_freestanding.o
 	$(call cmd,efi_ld)
 
 # ACPI