Revert "Revert "kernel: fix KERNEL_TOOLCHAIN_PATH_gcc and usage""

The fix was correct...

This reverts commit 168fd231b65f3bd575529984f552354f4c5e3e8b.

Change-Id: If550fd44f32b801553b8ac23cb2a91d3f29df557
diff --git a/build/tasks/kernel.mk b/build/tasks/kernel.mk
index fc00d37..6d68cf1 100644
--- a/build/tasks/kernel.mk
+++ b/build/tasks/kernel.mk
@@ -225,7 +225,7 @@
     $(error TARGET_KERNEL_MODULES is no longer supported!)
 endif
 
-PATH_OVERRIDE += PATH=$(KERNEL_TOOLCHAIN_PATH_gcc)/bin:$$PATH
+PATH_OVERRIDE += PATH=$(KERNEL_TOOLCHAIN_PATH_gcc):$$PATH
 
 ifeq (true,$(filter true, $(TARGET_NEEDS_DTBOIMAGE) $(BOARD_KERNEL_SEPARATED_DTBO)))
     KERNEL_MAKE_FLAGS += DTC_EXT=$(KERNEL_BUILD_OUT_PREFIX)$(DTC)