ANDROID: delete build.config.microdroid*.

Use the new kernel_build.defconfig attribute to replace DEFCONFIG.

Also, IN_KERNEL_MODULES has no effect, so also delete.

The final result is collapsed to build.config.common, so use it
directly.

Bug: 236012223
Change-Id: I56d2e55d5ea0494bfcf8e6b2c01283e4e40aa81d
Signed-off-by: HONG Yifan <elsk@google.com>

BUILD.bazel

@@ -402,7 +402,8 @@ kernel_build(
         "vmlinux",
         "vmlinux.symvers",
     ],
-    build_config = "build.config.microdroid.aarch64",
+    build_config = "build.config.common",
+    defconfig = "arch/arm64/configs/microdroid_defconfig",
     make_goals = [
         "Image",
     ],
@@ -435,7 +436,8 @@ kernel_build(
         "vmlinux",
         "vmlinux.symvers",
     ],
-    build_config = "build.config.microdroid.aarch64",
+    build_config = "build.config.common",
+    defconfig = "arch/arm64/configs/microdroid_defconfig",
     make_goals = [
         "Image",
     ],
@@ -465,7 +467,8 @@ kernel_build(
     srcs = [":kernel_x86_64_sources"],
     outs = X86_64_OUTS,
     arch = "x86_64",
-    build_config = "build.config.microdroid.x86_64",
+    build_config = "build.config.common",
+    defconfig = "arch/x86/configs/microdroid_defconfig",
     make_goals = [
         "bzImage",
     ],

build.config.microdroid

@@ -1 +0,0 @@
-DEFCONFIG=microdroid_defconfig

build.config.microdroid.aarch64

@@ -1,6 +0,0 @@
-. ${ROOT_DIR}/${KERNEL_DIR}/build.config.common
-. ${ROOT_DIR}/${KERNEL_DIR}/build.config.aarch64
-. ${ROOT_DIR}/${KERNEL_DIR}/build.config.microdroid
-
-# No modules
-IN_KERNEL_MODULES=

build.config.microdroid.x86_64

@@ -1,6 +0,0 @@
-. ${ROOT_DIR}/${KERNEL_DIR}/build.config.common
-. ${ROOT_DIR}/${KERNEL_DIR}/build.config.x86_64
-. ${ROOT_DIR}/${KERNEL_DIR}/build.config.microdroid
-
-# No modules
-IN_KERNEL_MODULES=