Fix https://bugs.gentoo.org/705038

Thanks Greg Turner <gmt@be-evil.net>

diff -urpN mbedtls-mbedtls-2.19.1.orig/crypto/include/CMakeLists.txt mbedtls-mbedtls-2.19.1/crypto/include/CMakeLists.txt
--- mbedtls-mbedtls-2.19.1.orig/crypto/include/CMakeLists.txt	2020-01-26 09:01:50.324231295 -0800
+++ mbedtls-mbedtls-2.19.1/crypto/include/CMakeLists.txt	2020-01-26 09:04:26.498880873 -0800
@@ -5,6 +5,19 @@ if(INSTALL_MBEDTLS_HEADERS)
     file(GLOB headers "mbedtls/*.h")
     file(GLOB psa_headers "psa/*.h")
 
+    if(USE_CRYPTO_SUBMODULE)
+        # Don't overwrite mbedtls's header files!
+        # config.h is supposed to be automatically checked for compatibility
+        # in automatic builds, while the other files should not just be
+        # compatible, but also identical in theory.
+        # Practically, we don't check that in crypto but just assume that the
+        # submodule configuration is sane and trust tls's headers.
+        list(REMOVE_ITEM headers    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/compat-1.3.h"
+                                    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/config.h"
+                                    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/error.h"
+                                    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/version.h")
+    endif(USE_CRYPTO_SUBMODULE)
+
     install(FILES ${headers}
         DESTINATION include/mbedtls
         PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ)
diff -urpN mbedtls-mbedtls-2.19.1.orig/include/CMakeLists.txt mbedtls-mbedtls-2.19.1/include/CMakeLists.txt
--- mbedtls-mbedtls-2.19.1.orig/include/CMakeLists.txt	2020-01-26 09:01:50.320231227 -0800
+++ mbedtls-mbedtls-2.19.1/include/CMakeLists.txt	2020-01-26 09:03:45.761189288 -0800
@@ -4,19 +4,6 @@ if(INSTALL_MBEDTLS_HEADERS)
 
     file(GLOB headers "mbedtls/*.h")
 
-    if(USE_CRYPTO_SUBMODULE)
-        # Don't overwrite mbedtls's header files!
-        # config.h is supposed to be automatically checked for compatibility
-        # in automatic builds, while the other files should not just be
-        # compatible, but also identical in theory.
-        # Practically, we don't check that in crypto but just assume that the
-        # submodule configuration is sane and trust tls's headers.
-        list(REMOVE_ITEM headers    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/compat-1.3.h"
-                                    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/config.h"
-                                    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/error.h"
-                                    "${CMAKE_CURRENT_SOURCE_DIR}/mbedtls/version.h")
-    endif(USE_CRYPTO_SUBMODULE)
-
     install(FILES ${headers}
         DESTINATION include/mbedtls
         PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ)