[source] kernel: use .patch extension for all patches

[LEDE Commits]

stintel pushed a commit to source.git, branch master:
https://git.lede-project.org/d18f76f762c0ce128f551735536f3cb996ebcacd

commit d18f76f762c0ce128f551735536f3cb996ebcacd
Author: Stijn Tintel <stijn at linux-ipv6.be>
AuthorDate: Tue Jun 27 06:37:46 2017 +0200

    kernel: use .patch extension for all patches
    
    Signed-off-by: Stijn Tintel <stijn at linux-ipv6.be>
---
 target/linux/gemini/patches-4.4/{060-cache-fa.diff => 060-cache-fa.patch} | 0
 ...ion_S25FL164K => 091-mtd-spi-nor-add-support-Spansion_S25FL164K.patch} | 0
 2 files changed, 0 insertions(+), 0 deletions(-)

diff --git a/target/linux/gemini/patches-4.4/060-cache-fa.diff b/target/linux/gemini/patches-4.4/060-cache-fa.patch
similarity index 100%
rename from target/linux/gemini/patches-4.4/060-cache-fa.diff
rename to target/linux/gemini/patches-4.4/060-cache-fa.patch
diff --git a/target/linux/generic/patches-3.18/091-mtd-spi-nor-add-support-Spansion_S25FL164K b/target/linux/generic/patches-3.18/091-mtd-spi-nor-add-support-Spansion_S25FL164K.patch
similarity index 100%
rename from target/linux/generic/patches-3.18/091-mtd-spi-nor-add-support-Spansion_S25FL164K
rename to target/linux/generic/patches-3.18/091-mtd-spi-nor-add-support-Spansion_S25FL164K.patch