Xen: CI fixes from XSN-2

* Add cf_check annotation to cmp_patch_id() used by bsearch().
 * Add U suffix to the K[] table to fix MISRA Rule 7.2 violations.

Fixes: 372af52441 ("xen/lib: Introduce SHA2-256")
Fixes: 630e8875ab ("x86/ucode: Perform extra SHA2 checks on AMD Fam17h/19h microcode")
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

xen/arch/x86/cpu/microcode/amd.c

@@ -99,7 +99,7 @@ static const struct patch_digest {
 #include "amd-patch-digests.c"
 };
 
-static int cmp_patch_id(const void *key, const void *elem)
+static int cf_check cmp_patch_id(const void *key, const void *elem)
 {
     const struct patch_digest *pd = elem;
     uint32_t patch_id = *(uint32_t *)key;

xen/lib/sha2-256.c

@@ -56,22 +56,22 @@ static uint32_t blend(uint32_t W[16], unsigned int i)
 }
 
 static const uint32_t K[] = {
-    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
-    0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
-    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
-    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
-    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
-    0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
-    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
-    0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
-    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
-    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
-    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
-    0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
-    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
-    0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
-    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
-    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
+    0x428a2f98U, 0x71374491U, 0xb5c0fbcfU, 0xe9b5dba5U,
+    0x3956c25bU, 0x59f111f1U, 0x923f82a4U, 0xab1c5ed5U,
+    0xd807aa98U, 0x12835b01U, 0x243185beU, 0x550c7dc3U,
+    0x72be5d74U, 0x80deb1feU, 0x9bdc06a7U, 0xc19bf174U,
+    0xe49b69c1U, 0xefbe4786U, 0x0fc19dc6U, 0x240ca1ccU,
+    0x2de92c6fU, 0x4a7484aaU, 0x5cb0a9dcU, 0x76f988daU,
+    0x983e5152U, 0xa831c66dU, 0xb00327c8U, 0xbf597fc7U,
+    0xc6e00bf3U, 0xd5a79147U, 0x06ca6351U, 0x14292967U,
+    0x27b70a85U, 0x2e1b2138U, 0x4d2c6dfcU, 0x53380d13U,
+    0x650a7354U, 0x766a0abbU, 0x81c2c92eU, 0x92722c85U,
+    0xa2bfe8a1U, 0xa81a664bU, 0xc24b8b70U, 0xc76c51a3U,
+    0xd192e819U, 0xd6990624U, 0xf40e3585U, 0x106aa070U,
+    0x19a4c116U, 0x1e376c08U, 0x2748774cU, 0x34b0bcb5U,
+    0x391c0cb3U, 0x4ed8aa4aU, 0x5b9cca4fU, 0x682e6ff3U,
+    0x748f82eeU, 0x78a5636fU, 0x84c87814U, 0x8cc70208U,
+    0x90befffaU, 0xa4506cebU, 0xbef9a3f7U, 0xc67178f2U,
 };
 
 static void sha2_256_transform(uint32_t *state, const void *_input)