arm: lib: Drop underscore from private libgcc filenames

Drop the underscore from the filenames of files implementing libgcc
routines. There is no functional change. This change is done to make
sync with Linux kernel easier.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: NTom Rini <trini@konsulko.com>

arch/arm/lib/Makefile

@@ -5,9 +5,9 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-lib-$(CONFIG_USE_PRIVATE_LIBGCC) += _ashldi3.o _ashrdi3.o _divsi3.o \
-			_lshrdi3.o _modsi3.o _udivsi3.o _umodsi3.o div0.o \
-			_uldivmod.o
+lib-$(CONFIG_USE_PRIVATE_LIBGCC) += ashldi3.o ashrdi3.o divsi3.o \
+			lshrdi3.o modsi3.o udivsi3.o umodsi3.o div0.o \
+			uldivmod.o
 
 ifdef CONFIG_CPU_V7M
 obj-y	+= vectors_m.o crt0.o