Merge bitcoin#20482: Add depends qt fix for ARM macs

c23f6f8 Add depends qt fix for ARM macs (Jonas Schnelli)

Pull request description:

  With this, depends builds fine on macOS 11 on an Apple Silicon Mac (ARM64).

ACKs for top commit:
  laanwj:
    Code review ACK c23f6f8

Tree-SHA512: a8354cec99969cff9e7dab150c335050ddb4b3c93a9f12a4db5e8046f02b11ce692ac17c2b96cbbe7f380c1aa110b15b8d6d48d51bc9c560282c702e99fd8a8d

Author: laanwj

depends/packages/qt.mk

@@ -97,6 +97,9 @@ $(package)_config_opts_darwin += -device-option MAC_TARGET=$(host)
 $(package)_config_opts_darwin += -device-option MAC_LD64_VERSION=$(LD64_VERSION)
 endif
 
+# for macOS on Apple Silicon (ARM) see https://bugreports.qt.io/browse/QTBUG-85279
+$(package)_config_opts_arm_darwin += -device-option QMAKE_APPLE_DEVICE_ARCHS=arm64
+
 $(package)_config_opts_linux  = -qt-xkbcommon-x11
 $(package)_config_opts_linux += -qt-xcb
 $(package)_config_opts_linux += -no-xcb-xlib