db845c: qcom: Add userspace tools to talk to dsp and modem

Add Qcom userspace tools and their respective sepolicy rules.

Userspace tools are downloaded from following github:

To trigger loading of wlan firmware on SDM845
git clone https://github.com/andersson/pd-mapper

Userspace reference for net/qrtr in the Linux kernel
git clone https://github.com/andersson/qrtr

Qualcomm Remote Filesystem Service Implementation
git clone https://github.com/andersson/rmtfs

Trivial File Transfer Protocol server over AF_QIPCRTR
git clone https://github.com/andersson/tqftpserv

Change-Id: Ic466af6fef010a9b71c90e38205f49a876b001e2
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/qcom/qrtr/src/hash.h b/qcom/qrtr/src/hash.h
new file mode 100644
index 0000000..5b004b5
--- /dev/null
+++ b/qcom/qrtr/src/hash.h
@@ -0,0 +1,12 @@
+#ifndef _HASH_H_
+#define _HASH_H_
+
+#include <stdint.h>
+
+unsigned int hash_mem(const void *data, unsigned int len);
+unsigned int hash_string(const char *value);
+unsigned int hash_u32(uint32_t value);
+unsigned int hash_u64(uint64_t value);
+unsigned int hash_pointer(void *value);
+
+#endif