main/linux-lts: enable support for EFI mixed mode

This is required for booting the kernel from a 32-bit EFI on a x86_64
CPU using a bootloader that supports EFI mixed mode.

main/linux-lts/APKBUILD

@@ -7,7 +7,7 @@ case $pkgver in
 	*.*.*)	_kernver=${pkgver%.*};;
 	*.*) _kernver=$pkgver;;
 esac
-pkgrel=0
+pkgrel=1
 pkgdesc="Linux lts kernel"
 url="https://www.kernel.org"
 depends="initramfs-generator"
@@ -350,7 +350,7 @@ f8582538a8482656138a0ae56b67a6d3cec09ff8d82a3f790ffa3fa7c37d0ae24a04f01f0ae1aec0
 6a0bfe99de383ef4531f66888b1d3e0cf35854b869290757e8eba19b76594e3f9686af62976c0e8d37c9a890c31ee51683e55b137fe60d7ee01f582098930555  lts.aarch64.config
 e4ad1b97e4862442dc28c47115ab992ff4e8e66774d402b292800008993b8453d1e4c18fd1d1a78beecd1e9dba26a7d1c31735d23e0bc606e611a8a351024b1f  lts.armv7.config
 98b5b8ab524bc6a36a41e2c07644b85b477ee1a2b68985276da261a12db49c8bae307a47cd7ebd80bed6fa853b0c5f604c542ee3591c6dbae002fd51b04322b8  lts.x86.config
-6f1271b076c78c9f76d8906ef58e6abd06727292a7e3323c6b0779306a6cdf948b3475f033c4a1294097192c52f79db70744e7a9c22afd1b81d8c26a905fbc6a  lts.x86_64.config
+982eb3f1da989231c8fabd5a371d115e8bbd7ba854245562c75d55140dda79f12b825a9451f3c8dc05a0e83f3a38e8155d204c19100ad474ca7a63aa828e5ec6  lts.x86_64.config
 3d5d1414c3af58b2f8b1601a0126de5dcbc24e1101f985509c6d444a73c1949a1796a33dd1c84493a26e38b6ee17685641cd2a219971b6a4b39f212bec560aa3  lts.ppc64le.config
 6780b83c513dbe30021ffb18c7ca6ed8162ad05883e93b2015b8d857da8919070ba7a74c999f56ca593f02f9923e819793979bce195469544f9de05a4b215d39  lts.s390x.config
 378fcf86d4a7bdc3f355e0b7200ac6b8bf137fb6abf664f4e9ebcb4fbc4ef9e8fad86c41d71b0a3a5f6647de7eb46d4ac57a557523b42ab005b971bb604101f1  virt.aarch64.config

main/linux-lts/lts.x86_64.config

@@ -66,6 +66,7 @@ CONFIG_ARCH_MEMORY_PROBE=y
 CONFIG_X86_INTEL_TSX_MODE_AUTO=y
 CONFIG_EFI=y
 CONFIG_EFI_STUB=y
+CONFIG_EFI_MIXED=y
 CONFIG_HZ_300=y
 CONFIG_KEXEC=y
 CONFIG_PHYSICAL_ALIGN=0x1000000