Tree base:
8b0a93741162 ("net: ipa: add IPA v5.2 configuration data")
Now at:
66603cc61e3b ("arm64: dts: qcom: milos: Add IPA node")
 ====== Checking arm64 before the patch ======
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-0/build_dtbs_check_arm64'
  GEN     Makefile
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/confdata.o
  HOSTCC  scripts/kconfig/expr.o
  LEX     scripts/kconfig/lexer.lex.c
  YACC    scripts/kconfig/parser.tab.[ch]
  HOSTCC  scripts/kconfig/menu.o
  HOSTCC  scripts/kconfig/preprocess.o
  HOSTCC  scripts/kconfig/symbol.o
  HOSTCC  scripts/kconfig/util.o
  HOSTCC  scripts/kconfig/lexer.lex.o
  HOSTCC  scripts/kconfig/parser.tab.o
  HOSTLD  scripts/kconfig/conf
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-0/build_dtbs_check_arm64'
../arch/arm64/Makefile:33: Detected assembler with broken .inst; disassembly will be unreliable
 ====== Checking arm64 with the patch ======
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-0/build_dtbs_check_arm64'
  GEN     Makefile
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/confdata.o
  HOSTCC  scripts/kconfig/expr.o
  YACC    scripts/kconfig/parser.tab.[ch]
  LEX     scripts/kconfig/lexer.lex.c
  HOSTCC  scripts/kconfig/menu.o
  HOSTCC  scripts/kconfig/preprocess.o
  HOSTCC  scripts/kconfig/symbol.o
  HOSTCC  scripts/kconfig/util.o
  HOSTCC  scripts/kconfig/lexer.lex.o
  HOSTCC  scripts/kconfig/parser.tab.o
  HOSTLD  scripts/kconfig/conf
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-0/build_dtbs_check_arm64'
../arch/arm64/Makefile:33: Detected assembler with broken .inst; disassembly will be unreliable
../arch/arm64/boot/dts/qcom/milos.dtsi:1284.20-1326.5: ERROR (phandle_references): /soc@0/ipa@3f40000: Reference to non-existent node or label "ipa_modem_tables"

ERROR: Input tree has errors, aborting (use -f to force output)
make[4]: *** [../scripts/Makefile.dtbs:140: arch/arm64/boot/dts/qcom/milos-fairphone-fp6.dtb] Error 2
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [../scripts/Makefile.build:548: arch/arm64/boot/dts/qcom] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/srv/nipa-poller/net-next/wt-0/Makefile:1561: dtbs] Error 2
make[1]: *** [/srv/nipa-poller/net-next/wt-0/Makefile:248: __sub-make] Error 2
make: *** [Makefile:248: __sub-make] Error 2