mesa: update to 26.2.1

[onlylunix]

Testing the changes

• I tested the changes in this PR: YES

Local build testing

• I built this PR locally for my native architecture, (x86_64-LIBC)

[onlylunix]

@dkwo
Using llvm22 leads to errors:
https://github.com/void-linux/void-packages/actions/runs/32359690020/job/96396418129?pr=62137
https://github.com/void-linux/void-packages/actions/runs/32359690020/job/96396418155?pr=62137

[dkwo]

is it currently failing to cross compile to arm 32 bit also with llvm21? is it the same error as llvm22? I see now in ci:

In file included from ../src/amd/addrlib/src/core/addrswizzler.cpp:18:
../src/amd/addrlib/src/core/addrswizzlersimd.h: In static member function 'static void Addr::MicroSw_2D_1BPE_NEON::CopyMicroBlock(void*, const void*, size_t, size_t)':
../src/amd/addrlib/src/core/addrswizzlersimd.h:1157:29: error: 'vzip1q_u32' was not declared in this scope; did you mean 'vzipq_u32'?

[dkwo]

Maybe we can restrict which drivers are built for arm32?

[onlylunix]

Maybe we can restrict which drivers are built for arm32?

Yes, packages are created by adding the following:

@@ -157,6 +157,12 @@
 # amd implicitly enables clover opencl, also enable hwdec and virgl too
 case "$XBPS_TARGET_MACHINE" in
 	armv5*|mips*) ;;
+	armv[67]*)
+		_have_nv=yes
+		#_have_amd=yes
+		_have_hwdec=yes
+		_have_virgl=yes
+		;;
 	*)
 		_have_nv=yes
 		_have_amd=yes

[onlylunix]

@dkwo
used llvm22