bash: Bump to 5.3, no patch needed

Upgrade from 5.1.16 (Jan 2022) to 5.3 (Jul 2025). The newer version doesn't
require patches - it already includes proper C header handling and the -std=gnu11
workaround is no longer needed thanks to upstream fixes.

Ref: GCC 15.1.0 upgrade (PR linuxboot#1991)
Signed-off-by: Thierry Laurion <insurgo@riseup.net>

Author: tlaurion

modules/bash

@@ -1,19 +1,16 @@
 # GNU bash
 modules-$(CONFIG_BASH) += bash
 
-bash_version := 5.1.16
+bash_version := 5.3
 bash_dir := bash-$(bash_version)
 bash_tar := bash-$(bash_version).tar.gz
 bash_url := https://ftpmirror.gnu.org/bash/$(bash_tar)
-bash_hash := 5bac17218d3911834520dad13cd1f85ab944e1c09ae1aba55906be1f8192f558
+bash_hash := 0d5cd86965f869a26cf64f4b71be7b96f90a3ba8b3d74e27e8e9d9d5550f31ba
 
 # --enable-debugger: Enables BASH_SOURCE tracing through functions as well as
 # BASH_ARGV/BASH_ARGC.  (Otherwise BASH_SOURCE[0] is empty when calling a
 # function, it's only set in top level script code.)
-# TODO(GCC15-BASH): Added -std=gnu11 for C23 keyword compatibility (bool, true, false conflicts)
-# Also patched lib/termcap/tparam.c to include <unistd.h> for write() function declaration
-# Consider reverting when bash is updated for GCC 15.1.0 compatibility
-bash_configure := CFLAGS="-g0 -Oz -std=gnu11" LDFLAGS="-s" ./configure \
+bash_configure := CFLAGS="-g0 -Oz" LDFLAGS="-s" ./configure \
 	$(CROSS_TOOLS) \
 	--host $(target) \
 	--prefix="/usr" \