Force out-of-source build for freerdp3

Author: Copilot

buildroot-external/package/freerdp3/freerdp3.mk

@@ -11,6 +11,7 @@ FREERDP3_LICENSE = Apache-2.0
 FREERDP3_LICENSE_FILES = LICENSE
 FREERDP3_CPE_ID_VENDOR = freerdp
 FREERDP3_INSTALL_STAGING = YES
+FREERDP3_SUPPORTS_IN_SOURCE_BUILD = NO
 
 FREERDP3_CONF_OPTS = \
 	-DCMAKE_C_FLAGS="$(TARGET_CFLAGS) -Wno-incompatible-pointer-types" \