Fixes to update.bin reloc (breaking!)

This fixes a regression in chainloading update.bin where the added check for if it's update or not, didn't copy the reloc code. And the calling was not updated to reflect this.

Additionally:
- Delete the reloc.S relic
- Force running config_hw in case we change hw init again in the future.

Makefile

@@ -63,6 +63,7 @@ OBJS += $(addprefix $(BUILD)/$(TARGET)/, \
 
 CUSTOMDEFINES := -DBLVERSIONMJ=$(BLVERSION_MAJOR) -DBLVERSIONMN=$(BLVERSION_MINOR) -DMENU_LOGO_ENABLE
 #CUSTOMDEFINES += -DDEBUG
+# 0: UART_A, 1: UART_B.
 #CUSTOMDEFINES += -DDEBUG_UART_PORT=0
 
 ARCH := -march=armv4t -mtune=arm7tdmi -mthumb -mthumb-interwork