cores: Add a no2muacm submodule but using binary distribution

Instead of using the "real" repo, it's just a wrapper for no2build
around the binary distribution

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

.gitmodules

@@ -22,3 +22,6 @@
 [submodule "cores/no2memcache"]
 	path = cores/no2memcache
 	url = https://github.com/no2fpga/no2memcache.git
+[submodule "cores/no2muacm/bin"]
+	path = cores/no2muacm/bin
+	url = https://github.com/no2fpga/no2muacm-bin.git

cores/no2muacm/bin

@@ -0,0 +1 @@
+Subproject commit 163470d2ca8e4c2666346b555b8c6fb150b6ef69

cores/no2muacm/no2core.mk

@@ -0,0 +1,8 @@
+CORE := no2muacm
+
+RTL_SRCS_no2muacm = $(addprefix bin/, \
+	muacm.v \
+	muacm_xclk.v \
+)
+
+include $(NO2BUILD_DIR)/core-magic.mk