Bump powerpc-utils to 1.3.13 and remove obsolete patch

- Update powerpc-utils from 1.3.5 (older) to 1.3.13 (Nov 2024)
- Remove powerpc-utils-1.3.5.patch as AC_FUNC_MALLOC fix is already applied in 1.3.13 (commented out in configure.ac)
- Newer version should include improvements for GCC 15.1 C23 compatibility
- Remove TODO comment about RTAS function pointer fixes as they should be addressed upstream

Signed-off-by: Thierry Laurion <insurgo@riseup.net>

Author: tlaurion

modules/powerpc-utils

@@ -11,11 +11,11 @@ modules-$(CONFIG_POWERPC_UTILS) += powerpc-utils
 # RTAS (Runtime Abstraction Services) is the PowerPC firmware interface; these
 # helpers must match its API. Monitor upstream for an official fix.
 
-powerpc-utils_version := 1.3.5
+powerpc-utils_version := 1.3.13
 powerpc-utils_dir := powerpc-utils-$(powerpc-utils_version)
 powerpc-utils_tar := powerpc-utils-$(powerpc-utils_version).tar.gz
 powerpc-utils_url := https://github.com/ibm-power-utilities/powerpc-utils/archive/v$(powerpc-utils_version)/$(powerpc-utils_tar)
-powerpc-utils_hash := 77efe3978ac9c251c4728a35b9aebd6076583939a8e26cc7f07ffa86432a8bf0
+powerpc-utils_hash := 35efb04063f1b7bd9d715f1d8d3ab75352b595b1fd12349d7570a7ba19ba6d86
 
 powerpc-utils_configure := \
 	./autogen.sh && \