meson, util: Make zlib optional again

This adds a HAVE_COMPRESSION macro, which is undefined if neither zlib
nor zstd are present, and is used to no-op compress.h/c. This also has
a side effect of fixing SCons, since it won't define this macro.

Fixes: d7ecbd5bf8 ("util: create some standalone compression helpers")
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9689>

Android.common.mk

@@ -73,6 +73,7 @@ LOCAL_CFLAGS += \
 	-DHAVE_LINUX_FUTEX_H \
 	-DHAVE_ENDIAN_H \
 	-DHAVE_ZLIB \
+	-DHAVE_COMPRESSION \
 	-DMAJOR_IN_SYSMACROS \
 	-DVK_USE_PLATFORM_ANDROID_KHR \
 	-fvisibility=hidden \