rtl882bu-dkms: fix for arch-generic dkms build

Fixes https://github.com/void-linux/void-packages/issues/24106

Tested on ppc64le.

srcpkgs/rtl8822bu-dkms/patches/0001-void-arch-generic-plumbing-bits.patch

@@ -0,0 +1,44 @@
+From 9cecd7211e1c41ce0716f923961cc07b119be573 Mon Sep 17 00:00:00 2001
+From: Daniel Kolesa <daniel@octaforge.org>
+Date: Sat, 12 Dec 2020 05:03:29 +0100
+Subject: [PATCH] void arch-generic plumbing bits
+
+---
+ Makefile | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 29da0bf..d58bc95 100644
+--- a/Makefile
++++ b/Makefile
+@@ -97,7 +97,8 @@ CONFIG_RTW_SDIO_PM_KEEP_POWER = y
+ ###################### MP HW TX MODE FOR VHT #######################
+ CONFIG_MP_VHT_HW_TX_MODE = n
+ ###################### Platform Related #######################
+-CONFIG_PLATFORM_I386_PC = y
++CONFIG_PLATFORM_VOID_NATIVE = y
++CONFIG_PLATFORM_I386_PC = n
+ CONFIG_PLATFORM_ARM_RPI = n
+ CONFIG_PLATFORM_ANDROID_X86 = n
+ CONFIG_PLATFORM_ANDROID_INTEL_X86 = n
+@@ -1030,6 +1031,17 @@ endif
+ 
+ EXTRA_CFLAGS += -DDM_ODM_SUPPORT_TYPE=0x04
+ 
++ifeq ($(CONFIG_PLATFORM_VOID_NATIVE), y)
++EXTRA_CFLAGS += -DCONFIG_@@VOID_ENDIAN@@_ENDIAN
++EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 -DRTW_USE_CFG80211_STA_EVENT
++ARCH := @@VOID_ARCH@@
++KVER := $(shell uname -r)
++KSRC := /usr/lib/modules/$(KVER)/build
++MODDESTDIR := /usr/lib/modules/$(KVER)/kernel/drivers/net/wireless/
++INSTALL_PREFIX :=
++STAGINGMODDIR := /usr/lib/modules/$(KVER)/kernel/drivers/staging
++endif
++
+ ifeq ($(CONFIG_PLATFORM_I386_PC), y)
+ EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
+ EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 -DRTW_USE_CFG80211_STA_EVENT
+-- 
+2.29.2
+

srcpkgs/rtl8822bu-dkms/template

@@ -1,7 +1,7 @@
 # Template file for 'rtl8822bu-dkms'
 pkgname=rtl8822bu-dkms
 version=20201020
-revision=1
+revision=2
 _gitrev=66aae0e630e9886acee2386c0623ca479130c8b8
 wrksrc="rtl8822bu-${_gitrev}"
 depends="dkms"
@@ -13,6 +13,25 @@ distfiles="https://github.com/EntropicEffect/rtl8822bu/archive/${_gitrev}.tar.gz
 checksum=0bc16641ffeb59517d935774bd3fcf62a3d51cf6f88f7f76bd520a5e3b8124d2
 dkms_modules="88x2bu ${version}"
 
+case "$XBPS_TARGET_MACHINE" in
+	x86_64*) _karch="x86_64";;
+	i686*) _karch="i386";;
+	aarch64*) _karch="arm64";;
+	arm*) _karch="arm";;
+	ppc*) _karch="powerpc";;
+	mips*) _karch="mips";;
+	*) broken="kernel arch not defined";;
+esac
+
+post_patch() {
+	if [ "$XBPS_TARGET_ENDIAN" = "be" ]; then
+		vsed -i 's,@@VOID_ENDIAN@@,BIG,g' Makefile
+	else
+		vsed -i 's,@@VOID_ENDIAN@@,LITTLE,g' Makefile
+	fi
+	vsed -i "s,@@VOID_ARCH@@,${_karch},g" Makefile
+}
+
 do_install() {
 	vmkdir /usr/src/88x2bu-${version}
 	vcopy "*" usr/src/88x2bu-${version}