Update patch for armhf to apply to all architectures

This should allow ruby3.0 to build on all architectures where the build
dependencies are available.

Author: terceiro

debian/patches/ruby_default_arch.m4-don-t-require-arhitectures-to-be-kno.patch

@@ -0,0 +1,23 @@
+From: Antonio Terceiro <[email protected]>
+Date: Mon, 4 Oct 2021 14:02:15 +0000
+Subject: ruby_default_arch.m4: don't require arhitectures to be known ahead
+ of time
+
+Not sure yet if this should be forwarded upstream or not.
+---
+ tool/m4/ruby_default_arch.m4 | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tool/m4/ruby_default_arch.m4 b/tool/m4/ruby_default_arch.m4
+index a53bb5f..080ee07 100644
+--- a/tool/m4/ruby_default_arch.m4
++++ b/tool/m4/ruby_default_arch.m4
+@@ -4,7 +4,7 @@ AC_MSG_CHECKING([arch option])
+ AS_CASE([$1],
+ 	[*64],        [ARCH_FLAG=-m64],
+ 	[[i[3-6]86]], [ARCH_FLAG=-m32],
+-	[AC_MSG_ERROR(unknown target architecture: $target_archs)]
++	[*],          []
+ 	)
+ AC_MSG_RESULT([$ARCH_FLAG])
+ ])

debian/patches/series

@@ -6,3 +6,4 @@ exclude-several-tests-unstable-in-Docker.patch
 Fix-FTBFS-on-x32-misdetected-as-i386-or-amd64.patch
 TestProcess-disable-gems-to-disable-rubygems_integration.patch
 test-openssl-test_cipher-skip-AES-CCM-tests-on-OpenSSL-1..patch
+ruby_default_arch.m4-don-t-require-arhitectures-to-be-kno.patch