ODROID: arm64: fix up build targets

[1] no document package
  [2] no source package
  [3] no debug image
  [4] no signed image

Signed-off-by: Dongjin Kim <tobetter@gmail.com>

debian/config/arm64/defines

@@ -1,14 +1,11 @@
 [base]
-cross-compile-compat: arm-linux-gnueabihf-
 kernel-arch: arm64
 featuresets:
  none
  rt
 
 [build]
-debug-info: true
 image-file: arch/arm64/boot/Image
-signed-code: true
 vdso: true
 
 [image]
@@ -19,7 +16,3 @@ breaks: libmozjs185-1.0, libmozjs-24-0 (<< 24.2.0-5.1~)
 hardware: 64-bit ARMv8 machines
 
 [arm64_image]
-
-[relations]
-gcc-9: gcc-9 <!stage1 !cross !pkg.linux.nokernel>, gcc-9-aarch64-linux-gnu <!stage1 cross !pkg.linux.nokernel>, gcc-arm-linux-gnueabihf <!stage1 !pkg.linux.nokernel>
-headers%gcc-9: gcc-9

debian/config/defines

@@ -105,7 +105,7 @@ featuresets:
  rt
 
 [build]
-debug-info: true
+debug-info: false
 # Disable code signing by default; this can be overridden per-architecture
 signed-code: false
 
@@ -127,3 +127,9 @@ gcc-9: gcc-9 <!stage1 !cross !pkg.linux.nokernel>, gcc-9-@gnu-type-package@ <!st
 # initramfs-generators
 initramfs-fallback: linux-initramfs-tool
 initramfs-tools: initramfs-tools (>= 0.120+deb8u2)
+
+[packages]
+docs: false
+installer: false
+libc-dev: false
+tools: true