qbe: Update qbe to use the improved Makefile - scc

commit e2fa5a7b5d693ad3ebb5ccf8ef3ca517032ac598
parent 853c8470dabce5986b7aa746f4489917ef19cb51
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue, 16 Nov 2021 22:03:15 +0100

qbe: Update qbe to use the improved Makefile

	scc simple c99 compiler
	git clone git://git.simple-cc.org/scc
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