Revert "axolotl: sync defconfig setup with kernel repo"

This reverts commit d25a964d54084d2fe4a527716ee5e92254aab96f.

Change-Id: Ied40786e9ebeb9fd9b78f64fc6875a2429bddda4
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 4579983..7ab5add 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -41,13 +41,12 @@
 TARGET_NO_KERNEL := false
 TARGET_NO_KERNEL_OVERRIDE := false
 
-TARGET_KERNEL_SOURCE := kernel/shift/sdm845
-TARGET_KERNEL_CONFIG := vendor/shift/axolotl_defconfig
 ifeq ($(TARGET_BUILD_VARIANT),eng)
-    TARGET_KERNEL_CONFIG += vendor/shift/debug.config
+    TARGET_KERNEL_CONFIG := lineage_axolotl_eng_defconfig
 else
-    TARGET_KERNEL_CONFIG += vendor/debugfs.config
+    TARGET_KERNEL_CONFIG := lineage_axolotl_defconfig
 endif
+TARGET_KERNEL_SOURCE := kernel/shift/sdm845
 
 TARGET_KERNEL_LLVM_BINUTILS := false
 TARGET_KERNEL_CLANG_VERSION := r416183b