kbuild: Prepare LDFLAGS for general use

Some arch Makefiles use LDFLAGS to keep special flags for the final
vmlinux link. However, we'd rather use LDFLAGS along the lines of
CFLAGS, AFLAGS etc, so get rid of these special cases.

arch/i386/Makefile

@@ -18,8 +18,7 @@
 
 LD=$(CROSS_COMPILE)ld -m elf_i386
 OBJCOPY=$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
-LDFLAGS=-e stext
-LINKFLAGS =-T $(TOPDIR)/arch/i386/vmlinux.lds $(LDFLAGS)
+LINKFLAGS =-T $(TOPDIR)/arch/i386/vmlinux.lds -e stext
 
 CFLAGS += -pipe
 

arch/parisc/Makefile

@@ -21,8 +21,7 @@ FINAL_LD=$(CROSS_COMPILE)ld --warn-common --warn-section-align
 
 CPP=$(CC) -E
 OBJCOPY=$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
-LDFLAGS =
-LINKFLAGS =-T $(TOPDIR)/arch/parisc/vmlinux.lds $(LDFLAGS)
+LINKFLAGS =-T $(TOPDIR)/arch/parisc/vmlinux.lds
 
 CFLAGS_PIPE := -pipe
 CFLAGS_NSR  := -fno-strength-reduce

arch/s390/Makefile

@@ -15,13 +15,12 @@
 
 LD=$(CROSS_COMPILE)ld -m elf_s390
 OBJCOPY=$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
-LDFLAGS=-e start
 ifeq ($(CONFIG_SHARED_KERNEL),y)
   LINKSCRIPT := arch/s390/vmlinux-shared.lds
 else
   LINKSCRIPT := arch/s390/vmlinux.lds
 endif
-LINKFLAGS =-T $(TOPDIR)/$(LINKSCRIPT) $(LDFLAGS)
+LINKFLAGS =-T $(TOPDIR)/$(LINKSCRIPT) -e start
 
 CFLAGS_PIPE := -pipe
 CFLAGS_NSR  := -fno-strength-reduce

arch/s390x/Makefile

@@ -16,13 +16,12 @@
 LD=$(CROSS_COMPILE)ld -m elf64_s390
 CPP=$(CC) -E
 OBJCOPY=$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
-LDFLAGS=-e start
 ifeq ($(CONFIG_SHARED_KERNEL),y)
   LINKSCRIPT := arch/s390x/vmlinux-shared.lds
 else
   LINKSCRIPT := arch/s390x/vmlinux.lds
 endif
-LINKFLAGS =-T $(TOPDIR)/$(LINKSCRIPT) $(LDFLAGS)
+LINKFLAGS =-T $(TOPDIR)/$(LINKSCRIPT) -e start
 MODFLAGS += -fpic
 
 CFLAGS_PIPE := -pipe

arch/x86_64/Makefile

@@ -35,8 +35,7 @@ export IA32_CC IA32_LD IA32_AS IA32_OBJCOPY IA32_CPP
 
 LD=$(CROSS_COMPILE)ld -m elf_x86_64
 OBJCOPY=$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
-LDFLAGS=-e stext
-LINKFLAGS =-T $(TOPDIR)/arch/x86_64/vmlinux.lds $(LDFLAGS)
+LINKFLAGS =-T $(TOPDIR)/arch/x86_64/vmlinux.lds -e stext
 
 CFLAGS += -mno-red-zone
 CFLAGS += -mcmodel=kernel