move qspim rtl to git repo

diff --git a/.gitmodules b/.gitmodules
index 4798126..dcb776f 100644
--- a/.gitmodules
+++ b/.gitmodules

@@ -1,3 +1,6 @@
 [submodule "caravel"]
 	path = caravel
 	url = https://github.com/efabless/caravel-lite.git
+[submodule "verilog/rtl/qspim"]
+	path = verilog/rtl/qspim
+	url = https://github.com/dineshannayya/qspim.git

diff --git a/verilog/rtl/qspim b/verilog/rtl/qspim
new file mode 160000
index 0000000..ec4e119
--- /dev/null
+++ b/verilog/rtl/qspim

@@ -0,0 +1 @@
+Subproject commit ec4e1191d82ff56079b913e8db71c61e15d2a517