[PATCH 5/7] doc: make pdfdocs: Update empty SVG file to something, otherwise compilation of the *.tex files fails

[Adriano Carvalho]

There is one SVG file (doc/develop/pics/spl_before_reloc.svg) that is empty (0-byte) and because of that it is not translated to PDF leading to an error. See below.
This commit updates that file to something (i.e., an simple image with "TODO" written on it), solving the problem.

The error in docker.io/trini/u-boot-gitlab-ci-runner:jammy-20250714-25Jul2025:

uboot at 35c89b9ab70e:~/u-boot$ make pdfdocs
[...]
WARNING: cannot copy image file '/home/uboot/u-boot/doc/output/.doctrees/images/spl_before_reloc.pdf': /home/uboot/u-boot/doc/output/.doctrees/images/spl_before_reloc.pdf does not exist
[...]
build finished with problems, 1 warning (with warnings treated as errors).
make[1]: *** [doc/Makefile:84: latexdocs] Error 1
make: *** [Makefile:2686: pdfdocs] Error 2

NOTE: This won't completely fix the pdfdocs target. See next commit(s).

Signed-off-by: Adriano Carvalho <adrianocarvalho.pt at gmail.com>
---
 doc/develop/pics/spl_before_reloc.svg | Bin 0 -> 239 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)

diff --git a/doc/develop/pics/spl_before_reloc.svg b/doc/develop/pics/spl_before_reloc.svg
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..917170799187a43d09c129e0c735326ad4c4db6e 100644
GIT binary patch
literal 239
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z3X5DK829uoxlZA|xo!>!A!^rZ>zz^PJl0iKhN%N?x}dO+ at pBX+rIe>#?#E7SrIdmb
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h+OArlA1^Dm{F1c_A67r#ST(oHtrQD~2QPc7><^w5Mt}eS

literal 0
HcmV?d00001

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