android: config.h: Add option to disable minidumps, default it to off

Porting of commit
7e4b0fae ("Add cmake option to disable minidumps, default it to off")

plus some other options that are to be set on (1) or off (0)

Fixes the following building error:

external/llvm80/lib/Support/Process.cpp:88:35:
error: use of undeclared identifier 'LLVM_ENABLE_CRASH_DUMPS'
static bool coreFilesPrevented = !LLVM_ENABLE_CRASH_DUMPS;
                                  ^
1 error generated.
2 files changed