uml: exclude some /arch/x86 optimizations

The x86_64 UML target wants to include SSSE3 optimized
crypto code which lives under /arch/x86/crypto.

However, these are not built and this causes an error.
| ERROR: module '[...]/arch/x86/crypto/sha512-ssse3.ko' is missing.
| make[3]: *** [modules/crypto.mk:990: [...]/kmod-crypto-sha512_5.15.112-1_x86_64.ipk] Error 1

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

package/kernel/linux/modules/crypto.mk

@@ -897,10 +897,12 @@ define KernelPackage/crypto-sha1/mpc85xx
   AUTOLOAD+=$(call AutoLoad,09,sha1-ppc-spe)
 endef
 
+ifndef CONFIG_TARGET_uml
 define KernelPackage/crypto-sha1/x86_64
   FILES+=$(LINUX_DIR)/arch/x86/crypto/sha1-ssse3.ko
   AUTOLOAD+=$(call AutoLoad,09,sha1-ssse3)
 endef
+endif
 
 ifdef KernelPackage/crypto-sha1/$(ARCH)
   KernelPackage/crypto-sha1/$(CRYPTO_TARGET)=\
@@ -935,10 +937,12 @@ define KernelPackage/crypto-sha256/mpc85xx
   AUTOLOAD+=$(call AutoLoad,09,sha256-ppc-spe)
 endef
 
+ifndef CONFIG_TARGET_uml
 define KernelPackage/crypto-sha256/x86_64
   FILES+=$(LINUX_DIR)/arch/x86/crypto/sha256-ssse3.ko
   AUTOLOAD+=$(call AutoLoad,09,sha256-ssse3)
 endef
+endif
 
 ifdef KernelPackage/crypto-sha256/$(ARCH)
   KernelPackage/crypto-sha256/$(CRYPTO_TARGET)=\
@@ -977,10 +981,12 @@ endef
 
 KernelPackage/crypto-sha512/tegra=$(KernelPackage/crypto-sha512/arm)
 
+ifndef CONFIG_TARGET_uml
 define KernelPackage/crypto-sha512/x86_64
   FILES+=$(LINUX_DIR)/arch/x86/crypto/sha512-ssse3.ko
   AUTOLOAD+=$(call AutoLoad,09,sha512-ssse3)
 endef
+endif
 
 ifdef KernelPackage/crypto-sha512/$(ARCH)
   KernelPackage/crypto-sha512/$(CRYPTO_TARGET)=\