arc: Get rid of handwritten string routines

U-Boot is a bit special piese of software because it is being
only executed once on power-on as compared to operating system
for example. That's why we don't care much about performance
optimizations instead we're more concerned about size. And up-to-date
compilers might produce much smaller code compared to
performance-optimized routines copy-pasted from the Linux kernel.

Here's an example:
------------------------------->8--------------------------
--- size_asm_strings.txt
+++ size_c_strings.txt
@@ -1,2 +1,2 @@
    text	   data	    bss	    dec	    hex	filename
- 121260	   3784	   3308	 128352	  1f560	u-boot
+ 120448	   3784	   3308	 127540	  1f234	u-boot
------------------------------->8--------------------------

See we were able to shave off ~800 bytes of .text section.

Also usage of string routines implemented in C gives us an ability
to support more HW flavors for free: generated instructions will match
our target as long as correct compiler option is used.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/arch/arc/lib/Makefile b/arch/arc/lib/Makefile
index 12097bf3bee..6b7fb0fdff9 100644
--- a/arch/arc/lib/Makefile
+++ b/arch/arc/lib/Makefile
@@ -10,13 +10,6 @@ obj-y += cache.o
 obj-y += cpu.o
 obj-y += interrupts.o
 obj-y += relocate.o
-obj-y += strchr-700.o
-obj-y += strcmp.o
-obj-y += strcpy-700.o
-obj-y += strlen.o
-obj-y += memcmp.o
-obj-y += memcpy-700.o
-obj-y += memset.o
 obj-y += reset.o
 obj-y += ints_low.o
 obj-y += init_helpers.o