[klibc] Kbuild: Rename LLD to LD_IS_LLD

This more accurately reflects the meaning of the variable.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc
index e0dfcd0..a4be6cb 100644
--- a/scripts/Kbuild.klibc
+++ b/scripts/Kbuild.klibc
@@ -84,8 +84,8 @@
 KLIBCARCHINCFLAGS =
 KLIBCCRTSHARED    := $(KLIBCOBJ)/interp.o
 
-LLD               := $(shell $(LD) --version 2>&1 | grep LLD)
-LD_IMAGE_BASE_OPT := $(if $(LLD),--image-base,-Ttext-segment)
+LD_IS_LLD         := $(shell $(LD) --version 2>&1 | grep LLD)
+LD_IMAGE_BASE_OPT := $(if $(LD_IS_LLD),--image-base,-Ttext-segment)
 
 # Arch specific definitions for klibc
 include $(srctree)/$(KLIBCSRC)/arch/$(KLIBCARCHDIR)/MCONFIG