Adding the rest of files:

- ASM is disabled
- Neug needs full rewrite
- Flash is based on PiMoroni 4MB flash (needs adjust)

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

jpc-ac_p256k1.h

@@ -0,0 +1,14 @@
+/**
+ * @brief	Jacobian projective coordinates
+ */
+typedef struct
+{
+  bn256 x[1];
+  bn256 y[1];
+  bn256 z[1];
+} jpc;
+
+void jpc_double_p256k1 (jpc *X, const jpc *A);
+void jpc_add_ac_p256k1 (jpc *X, const jpc *A, const ac *B);
+void jpc_add_ac_signed_p256k1 (jpc *X, const jpc *A, const ac *B, int minus);
+int jpc_to_ac_p256k1 (ac *X, const jpc *A);