toolchain: cleanup dependencies

Reorganize dependencies between toolchain targets to save a line.
This also puts them in a linear order which is easier to read.

Signed-off-by: Michael Pratt <[email protected]>

toolchain/Makefile

@@ -34,8 +34,8 @@ $(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_EXTERNAL_TOOLCHAIN)
 # builddir dependencies
 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
   ifdef CONFIG_USE_MUSL
+    $(curdir)/gcc/initial/compile:=$(curdir)/binutils/compile
     $(curdir)/kernel-headers/compile:=$(curdir)/gcc/initial/compile
-    $(curdir)/$(LIBC)/compile:=$(curdir)/kernel-headers/compile
   else
     $(curdir)/builddirs += $(LIBC)/headers gcc/minimal
     $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/compile
@@ -44,9 +44,8 @@ ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
     $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/headers/compile
   endif
 
-  $(curdir)/gcc/initial/compile+=$(curdir)/binutils/compile
-  $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/compile
-  $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/compile $(curdir)/kernel-headers/compile
+  $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/compile $(curdir)/kernel-headers/compile
+  $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/compile
   $(curdir)/$(LIBC)/utils/compile:=$(curdir)/gcc/final/compile
 endif