smmu-proxy: Change location of UAPI directory

Change the location of our UAPI directory in order to satisfy
directory structure requirements.

Change-Id: I620f441833fc1cbe5cd871028f2babba47af5ef4
Signed-off-by: Chris Goldsworthy <quic_cgoldswo@quicinc.com>

smmu-proxy/linux/qti-smmu-proxy.h

@@ -9,7 +9,7 @@
 #include <linux/scatterlist.h>
 #include <linux/align.h>
 
-#include <smmu-proxy/uapi/linux/qti-smmu-proxy.h>
+#include <smmu-proxy/include/uapi/linux/qti-smmu-proxy.h>
 
 #define SMMU_PROXY_MEM_ALIGNMENT (1 << 21)