sys-kernel/gentoo-kernel-bin: BDEPEND on dev-util/pahole

Without this, if CONFIG_DEBUG_INFO_BTF_MODULES is enabled, as it is
by default since 49e0de80b0, while g-k-bin
will seem to install fine, it's installed incorrectly.

It also leads to external modules later not being loadable with relocation
errors from unhandled BTF:
```
[ 1648.352993] module: x86/modules: Invalid relocation target, existing value is nonzero for type 1, loc 00000000bc2721ed, val ffffffffc11e7850
```

Thanks-to: Ionen Wolkens <ionen@gentoo.org>
Reported-by: Sebastian Engel <sighunter@gmx.de>
Signed-off-by: Sam James <sam@gentoo.org>

sys-kernel/gentoo-kernel-bin/gentoo-kernel-bin-6.10.8-r1.ebuild

@@ -11,7 +11,8 @@ inherit kernel-install toolchain-funcs unpacker
 
 MY_P=linux-${PV%.*}
 GENPATCHES_P=genpatches-${PV%.*}-$(( ${PV##*.} + 3 ))
-BINPKG=${PF/-bin}-1
+# XXX: Change me back to PF afer 6.10.8-r1
+BINPKG=${P/-bin}-1
 
 DESCRIPTION="Pre-built Linux kernel with Gentoo patches"
 HOMEPAGE="https://www.kernel.org/"
@@ -49,6 +50,7 @@ PDEPEND="
 BDEPEND="
 	app-alternatives/bc
 	app-alternatives/lex
+	dev-util/pahole
 	virtual/libelf
 	app-alternatives/yacc
 "