Support building on Android arm aarch64 x86 x86_64

1. Add cmake support in CMakeLists.txt according to https://developer.android.com/ndk/guides/other_build_systems

2. Resolve symbols errors

3. Backport fixes from 438ed42311

   > QEMU relies on two optimization for ppc64 and arm:
   >
   > 1. if(0) /* optimized code */
   > 2. assert(0); /* optimized code */
   >
   > But the assert on mingw32 doesn't have noreturn attribute which prevents
   > the second optimization and some code is reverted to the original code
   > to fit in the first optimization.
   >
   > The assert implementation is copied from glib as qemu did.

   Unfortunately, NDK also doesn't have an assert implementation qemu prefers.

qemu/target/arm/helper.c

@@ -6027,12 +6027,11 @@ static void define_debug_regs(ARMCPU *cpu)
     wrps = arm_num_wrps(cpu);
 #ifndef NDEBUG
     ctx_cmps = arm_num_ctx_cmps(cpu);
+    assert(ctx_cmps <= brps);
 #else
     arm_num_ctx_cmps(cpu);
 #endif
 
-    assert(ctx_cmps <= brps);
-
     define_one_arm_cp_reg(cpu, &dbgdidr);
     define_arm_cp_regs(cpu, debug_cp_reginfo);