fix(driver/modern_bpf): account for both ppc64le and powerpc64le

`CMAKE_SYSTEM_PROCESSOR` could be set to either `ppc64le` or
`powerpc64le` on the `ppc64le` architecture, depending on the the fact
that cmake uses the result of `uname -m` (i.e.: `ppc64le`) or the
value set by the zig toolchain `powerpc64le`. Account for both.

Signed-off-by: Leonardo Di Giovanna <leonardodigiovanna1@gmail.com>

Author: ekoops

driver/modern_bpf/CMakeLists.txt

@@ -210,7 +210,7 @@ if(MODERN_BPF_TARGET_ARCH STREQUAL "x86_64")
 	set(ARCH x86)
 elseif(MODERN_BPF_TARGET_ARCH STREQUAL "aarch64")
 	set(ARCH arm64)
-elseif(MODERN_BPF_TARGET_ARCH STREQUAL "ppc64le")
+elseif(MODERN_BPF_TARGET_ARCH STREQUAL "ppc64le" OR MODERN_BPF_TARGET_ARCH STREQUAL "powerpc64le")
 	set(ARCH powerpc)
 elseif(MODERN_BPF_TARGET_ARCH MATCHES "^mips")
 	set(ARCH mips)