The PLLR parameter in LL_RCC_PLLI2S_ConfigDomain_I2S() API should
be selected among the following list of (already shifted) values:
* @arg @ref LL_RCC_PLLI2SR_DIV_2
* @arg @ref LL_RCC_PLLI2SR_DIV_3
* @arg @ref LL_RCC_PLLI2SR_DIV_4
* @arg @ref LL_RCC_PLLI2SR_DIV_5
* @arg @ref LL_RCC_PLLI2SR_DIV_6
* @arg @ref LL_RCC_PLLI2SR_DIV_7
This commit fixes PR #12609.
Signed-off-by: Armando Visconti <armando.visconti@st.com>