MAINTAINERS: Update Josh Poimboeuf's email address

Change to my kernel.org email address.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/1abc3de4b00dc6f915ac975a2ec29ed545d96dc4.1651687652.git.jpoimboe@redhat.com

MAINTAINERS

@@ -7499,7 +7499,7 @@ F:	Documentation/hwmon/f71805f.rst
 F:	drivers/hwmon/f71805f.c
 
 FADDR2LINE
-M:	Josh Poimboeuf <jpoimboe@redhat.com>
+M:	Josh Poimboeuf <jpoimboe@kernel.org>
 S:	Maintained
 F:	scripts/faddr2line
 
@@ -11348,7 +11348,7 @@ F:	drivers/mmc/host/litex_mmc.c
 N:	litex
 
 LIVE PATCHING
-M:	Josh Poimboeuf <jpoimboe@redhat.com>
+M:	Josh Poimboeuf <jpoimboe@kernel.org>
 M:	Jiri Kosina <jikos@kernel.org>
 M:	Miroslav Benes <mbenes@suse.cz>
 M:	Petr Mladek <pmladek@suse.com>
@@ -14224,7 +14224,7 @@ F:	lib/objagg.c
 F:	lib/test_objagg.c
 
 OBJTOOL
-M:	Josh Poimboeuf <jpoimboe@redhat.com>
+M:	Josh Poimboeuf <jpoimboe@kernel.org>
 M:	Peter Zijlstra <peterz@infradead.org>
 S:	Supported
 F:	tools/objtool/
@@ -18792,7 +18792,7 @@ F:	include/dt-bindings/reset/starfive-jh7100.h
 
 STATIC BRANCH/CALL
 M:	Peter Zijlstra <peterz@infradead.org>
-M:	Josh Poimboeuf <jpoimboe@redhat.com>
+M:	Josh Poimboeuf <jpoimboe@kernel.org>
 M:	Jason Baron <jbaron@akamai.com>
 R:	Steven Rostedt <rostedt@goodmis.org>
 R:	Ard Biesheuvel <ardb@kernel.org>
@@ -21444,7 +21444,7 @@ F:	arch/x86/kernel/apic/x2apic_uv_x.c
 F:	arch/x86/platform/uv/
 
 X86 STACK UNWINDING
-M:	Josh Poimboeuf <jpoimboe@redhat.com>
+M:	Josh Poimboeuf <jpoimboe@kernel.org>
 M:	Peter Zijlstra <peterz@infradead.org>
 S:	Supported
 F:	arch/x86/include/asm/unwind*.h