meta/meta-selftest: Fix variable assignment whitespace

Recipes are much more readable with whitespace around the assignment operators.
Fix various assignments in OE-Core to show this is definitely the preferred
formatting.

(From OE-Core rev: 30ea609d3357fb3de911f2f6a5e6856c151b976a)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/cryptodev/cryptodev-module_1.14.bb

@@ -7,7 +7,7 @@ inherit module
 # Header file provided by a separate package
 DEPENDS += "cryptodev-linux"
 
-EXTRA_OEMAKE='KERNEL_DIR="${STAGING_KERNEL_DIR}" PREFIX="${D}"'
+EXTRA_OEMAKE = 'KERNEL_DIR="${STAGING_KERNEL_DIR}" PREFIX="${D}"'
 
 RCONFLICTS:${PN} = "ocf-linux"
 RREPLACES:${PN} = "ocf-linux"

meta/recipes-kernel/cryptodev/cryptodev-tests_1.14.bb

@@ -4,7 +4,7 @@ SUMMARY = "A test suite for /dev/crypto device driver"
 
 DEPENDS += "openssl"
 
-EXTRA_OEMAKE='KERNEL_DIR="${STAGING_EXECPREFIXDIR}" PREFIX="${D}"'
+EXTRA_OEMAKE = 'KERNEL_DIR="${STAGING_EXECPREFIXDIR}" PREFIX="${D}"'
 
 do_compile() {
 	oe_runmake tests