Use local checkout of deps when developing

Specify the path to uefi crates so that the local checkout is used when
developing instead of pulling from crates.io.

Ref: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#multiple-locations
Signed-off-by: Tim Crawford <tcrawford@system76.com>

Author: crawfxrd

crates/uefi_alloc/Cargo.toml

@@ -11,4 +11,4 @@ repository = "https://gitlab.redox-os.org/redox-os/uefi"
 name = "uefi_alloc"
 
 [dependencies]
-redox_uefi = "0.1.2"
+redox_uefi = { path = "../uefi" , version = "0.1.2" }

crates/uefi_std/Cargo.toml

@@ -11,5 +11,5 @@ repository = "https://gitlab.redox-os.org/redox-os/uefi"
 name = "uefi_std"
 
 [dependencies]
-redox_uefi = "0.1.2"
-redox_uefi_alloc = "0.1.1"
+redox_uefi = { path = "../uefi", version = "0.1.2" }
+redox_uefi_alloc = { path = "../uefi_alloc", version = "0.1.1" }