Change in coreboot[master]: lib/Makefile.inc: Fail build if SPD file doesn't exist

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Reka Norman, Nick Vaccaro, Karthik Ramasubramanian.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57697 )

Change subject: lib/Makefile.inc: Fail build if SPD file doesn't exist
......................................................................

Patch Set 3: Code-Review+2

(1 comment)

File src/lib/Makefile.inc:

https://review.coreboot.org/c/coreboot/+/57697/comment/5b153762_101ca6d9 
PS3, Line 369: for f in $(LIB_SPD_DEPS); do \
             : 	 if [ ! -f $$f ]; then \
             : 	  echo "File not found: $$f" >&2; \
             : 	  exit 1; \
             : 	 fi; \
             : 	 for c in $$(cat $$f | grep --binary-files=text -v ^#); \
             : 	  do printf $$(printf '\%o' 0x$$c); \
nit: use moreo than 1 space for indents, e.g. 4 (or a TAB)