Makefile: Fix description for relocate-rela parameters

Numbers in comment are shifter which is visible from command which calls
them. Also relocate-rela usage is describing them.
"Usage: %s <bin file> <text base> <rela start> <rela end>"

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/bb0287b9071eb33eea0cf914a7128c2603684377.1655299267.git.michal.simek@amd.com
diff --git a/Makefile b/Makefile
index 2fa3a3b..2270ec5 100644
--- a/Makefile
+++ b/Makefile
@@ -922,7 +922,7 @@
 # the raw binary, but certain simulators only accept an ELF file (but don't
 # do the relocation).
 ifneq ($(CONFIG_STATIC_RELA),)
-# $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
+# $(2) is u-boot ELF, $(3) is u-boot bin, $(4) is text base
 quiet_cmd_static_rela = RELOC   $@
 cmd_static_rela = \
 	start=$$($(NM) $(2) | grep __rel_dyn_start | cut -f 1 -d ' '); \