uml: fix CONFIG_ALL_KMODS

building with CONFIG_ALL_KMODS unearthed all sorts of interesting
failures

ERROR: module 'crypto/chacha-x86_64.ko' is missing.
ERROR: module 'crypto/poly1305-x86_64.ko' is missing.
ERROR: module 'crypto/curve25519-x86_64.ko' is missing.
ERROR: module 'crypto/camellia-x86_64.ko' is missing.

These stem from the main UML Makefile.
|# UML only makes sense on linux
|ifeq ($(HOST_OS),Linux)
|  ifeq ($(HOST_ARCH),x86_64)
|
|ARCH:=x86_64
|BOARD:=uml

The modules in question define x86_64 optimized version and
the OpenWrt's buildsystem expects that these modules will be present.

SPI is not available due to the UML Architecture not setting HAS_IOMEM.
In the future, UML could get (virtualized) IOMEM and/or SPI could drop
the HAS_IOMEM dependency. A patch for the latter has been sent:
<https://lore.kernel.org/linux-spi/[email protected]/T/#u>

mt76: Unfortunately, the firmware packages are picked up, but the
associated drivers can't be build because iowrite32+ioread32 are
not defined.

Signed-off-by: Christian Lamparter <[email protected]>

package/kernel/linux/modules/crypto.mk

@@ -577,10 +577,12 @@ define KernelPackage/crypto-lib-chacha20
   $(call AddDepends/crypto)
 endef
 
+ifndef CONFIG_TARGET_uml
 define KernelPackage/crypto-lib-chacha20/x86_64
   KCONFIG+=CONFIG_CRYPTO_CHACHA20_X86_64
   FILES+=$(LINUX_DIR)/arch/x86/crypto/chacha-x86_64.ko
 endef
+endif
 
 # Note that a non-neon fallback implementation is available on arm32 when
 # NEON is not supported, hence all arm targets can utilize lib-chacha20/arm
@@ -639,10 +641,12 @@ define KernelPackage/crypto-lib-curve25519/config
   imply PACKAGE_kmod-crypto-kpp
 endef
 
+ifndef CONFIG_TARGET_uml
 define KernelPackage/crypto-lib-curve25519/x86_64
   KCONFIG+=CONFIG_CRYPTO_CURVE25519_X86
   FILES+=$(LINUX_DIR)/arch/x86/crypto/curve25519-x86_64.ko
 endef
+endif
 
 define KernelPackage/crypto-lib-curve25519/arm-neon
   KCONFIG+=CONFIG_CRYPTO_CURVE25519_NEON
@@ -674,10 +678,12 @@ define KernelPackage/crypto-lib-poly1305/config
   imply PACKAGE_kmod-crypto-hash
 endef
 
+ifndef CONFIG_TARGET_uml
 define KernelPackage/crypto-lib-poly1305/x86_64
   KCONFIG+=CONFIG_CRYPTO_POLY1305_X86_64
   FILES+=$(LINUX_DIR)/arch/x86/crypto/poly1305-x86_64.ko
 endef
+endif
 
 define KernelPackage/crypto-lib-poly1305/arm
   KCONFIG+=CONFIG_CRYPTO_POLY1305_ARM
@@ -841,6 +847,7 @@ ifndef CONFIG_TARGET_x86_64
   endef
 endif
 
+ifndef CONFIG_TARGET_uml
 define KernelPackage/crypto-misc/x86_64
   FILES+= \
 	$(LINUX_DIR)/arch/x86/crypto/camellia-x86_64.ko \
@@ -860,6 +867,7 @@ define KernelPackage/crypto-misc/x86_64
 	cast6-avx-x86_64 twofish-x86_64 twofish-x86_64-3way \
 	twofish-avx-x86_64 blowfish-x86_64 serpent-avx-x86_64 serpent-avx2)
 endef
+endif
 
 ifdef KernelPackage/crypto-misc/$(ARCH)
   KernelPackage/crypto-misc/$(CRYPTO_TARGET)=\

package/kernel/linux/modules/other.mk

@@ -624,7 +624,7 @@ $(eval $(call KernelPackage,regmap-core))
 define KernelPackage/regmap-spi
   SUBMENU:=$(OTHER_MENU)
   TITLE:=SPI register map support
-  DEPENDS:=+kmod-regmap-core
+  DEPENDS:=+kmod-regmap-core @!TARGET_uml
   HIDDEN:=1
   KCONFIG:=CONFIG_REGMAP_SPI \
 	   CONFIG_SPI=y

package/kernel/mt76/Makefile

@@ -41,7 +41,8 @@ define KernelPackage/mt76-default
   DEPENDS:= \
 	+kmod-mac80211 \
 	+@DRIVER_11AC_SUPPORT \
-	+@KERNEL_PAGE_POOL
+	+@KERNEL_PAGE_POOL \
+	@!TARGET_uml
 endef
 
 define KernelPackage/mt76