librecmc : Add python3.12 to the list and fixup grep issue

Makefile

@@ -18,7 +18,7 @@ $(if $(findstring $(space),$(TOPDIR)),$(error ERROR: The path to the libreCMC di
 
 world:
 
-DISTRO_PKG_CONFIG:=$(shell which -a pkg-config | grep -E '\/usr' | head -n 1)
+DISTRO_PKG_CONFIG:=$(shell which -a pkg-config | grep -E '/usr' | head -n 1)
 export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
 
 ifneq ($(LIBRECMC_BUILD),1)

include/prereq-build.mk

@@ -145,6 +145,7 @@ $(eval $(call SetupHostCommand,perl,Please install Perl 5.x, \
 $(eval $(call CleanupPython2))
 
 $(eval $(call SetupHostCommand,python,Please install Python >= 3.5, \
+	python3.12 -V 2>&1 | grep 'Python 3', \
 	python3.11 -V 2>&1 | grep 'Python 3', \
 	python3.10 -V 2>&1 | grep 'Python 3', \
 	python3.9 -V 2>&1 | grep 'Python 3', \