Add riscv-alloc and riscv-semihosting crates.

Author: dvc94ch

.gitmodules

@@ -1,15 +1,21 @@
 [submodule "hifive"]
 	path = hifive
-	url = https://github.com/dvc94ch/hifive
+	url = https://github.com/riscv-rust/hifive
+[submodule "e310x"]
+	path = e310x
+	url = https://github.com/riscv-rust/e310x
 [submodule "riscv-rt"]
 	path = riscv-rt
-	url = https://github.com/dvc94ch/riscv-rt
+	url = https://github.com/riscv-rust/riscv-rt
 [submodule "riscv"]
 	path = riscv
-	url = https://github.com/dvc94ch/riscv
-[submodule "e310x"]
-	path = e310x
-	url = https://github.com/dvc94ch/e310x
+	url = https://github.com/riscv-rust/riscv
+[submodule "riscv-semihosting"]
+	path = riscv-semihosting
+	url = https://github.com/riscv-rust/riscv-semihosting
+[submodule "riscv-alloc"]
+	path = riscv-alloc
+	url = https://github.com/riscv-rust/riscv-alloc
 [submodule "riscv-rust-quickstart"]
 	path = riscv-rust-quickstart
-	url = https://github.com/dvc94ch/riscv-rust-quickstart
+	url = https://github.com/riscv-rust/riscv-rust-quickstart

Cargo.lock

@@ -9,6 +9,8 @@ authors = ["David Craven <david@craven.ch>"]
 embedded-hal = { git = "https://github.com/japaric/embedded-hal", rev = "7d904f515d15fd5fe7ea34e18820ea83e2651fa2" }
 nb = { git = "https://github.com/japaric/nb" }
 hifive = { path = "hifive" }
+#riscv-alloc = { path = "riscv-alloc" }
+riscv-semihosting = { path = "riscv-semihosting" }
 riscv-rust-quickstart = { path = "riscv-rust-quickstart" }
 
 [profile.release]