Add dumps for the Microchip ATSHA204A crypto module

diff --git a/i2c/crypto/microchip_atsha204a/README b/i2c/crypto/microchip_atsha204a/README
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+++ b/i2c/crypto/microchip_atsha204a/README
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+-------------------------------------------------------------------------------
+Microchip ATSHA204A
+-------------------------------------------------------------------------------
+
+The Microchip ATSHA204 is a symmetric crypto module that communicates with
+a host over I2C.
+
+Details:
+http://www.microchip.com/wwwproducts/en/ATsha204a
+
+
+Logic analyzer setup
+--------------------
+
+The logic analyzer used was a standard 8-channel FX2-based device (at 1 MHz).
+
+  Probe       ATSHA204A
+  ---------------------
+  0           SDA
+  1           SCL
+
+
+Data
+----
+
+The included sample originates from unit tests executed on the ATSHA204A
+and captured using PulseView. It contains samples of the following commands:
+
+ - Random
+ - DevRev
+ - Nonce
+ - GenDig
+ - HMAC
+ - MAC
+ - CheckMac
+ - DeriveKey
+ - Pause
+

diff --git a/i2c/crypto/microchip_atsha204a/atsha204a_snippet.sr b/i2c/crypto/microchip_atsha204a/atsha204a_snippet.sr
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Binary files /dev/null and b/i2c/crypto/microchip_atsha204a/atsha204a_snippet.sr differ